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Random questions order when game starts - Trivia javascript game

I have a working code of a 10 text questions' trivia game with a timer (html, javascript, css).
How the questions can be served from a simple .txt file (so I can scale)?
How the javascript can choose the questions in a random order, every time the games starts?
I have studied 1 to get an idea. However, my javascript coding skills are very limited. I would appreciate if you can point me to the right direction.
(function() {
const playButton = document.querySelector("#play");
const letsstartButton = document.querySelector("#lets-start");
const playagainButton = document.querySelector("#play-again");
const howToPlayButton = document.querySelector("#how-to-play-button");
const closeHowToButton = document.querySelector("#close-how-to");
const howToPlayScreen = document.querySelector(".how-to-play-screen");
const mainScreen = document.querySelector(".main-screen");
const triviaScreen = document.querySelector(".trivia-screen");
const resultScreen = document.querySelector(".result-screen");
playButton.addEventListener("click", startTrivia);
letsstartButton.addEventListener("click", startTrivia);
playagainButton.addEventListener("click", startTrivia);
howToPlayButton.addEventListener("click", function() {
howToPlayScreen.classList.remove("hidden");
mainScreen.classList.add("hidden");
});
closeHowToButton.addEventListener("click", function() {
howToPlayScreen.classList.add("hidden");
mainScreen.classList.remove("hidden");
});
const questionLength = 10;
let questionIndex = 0;
let score = 0;
let questions = [];
let timer = null;
function startTrivia() {
//show spinner
questionIndex = 0;
questions = [];
score = 0;
window.setTimeout(function() {
//get questions from server
mainScreen.classList.add("hidden");
howToPlayScreen.classList.add("hidden");
resultScreen.classList.add("hidden");
triviaScreen.classList.remove("hidden");
questions = [{
answers: ["Roma", "Athens", "London", "Japan"],
correct: "Roma",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma1", "Athens1", "London1", "Japan1"],
correct: "Athens1",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma2", "Athens2", "London2", "Japan2"],
correct: "London2",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma3", "Athens3", "London3", "Japan3"],
correct: "London3",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma4", "Athens4", "London4", "Japan4"],
correct: "Athens4",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma5", "Athens5", "London5", "Japan5"],
correct: "Athens5",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma6", "Athens6", "London6", "Japan6"],
correct: "Roma6",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma7", "Athens7", "London7", "Japan7"],
correct: "Japan7",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma8", "Athens8", "London8", "Japan8"],
correct: "London8",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma9", "Athens9", "London9", "Japan9"],
correct: "Japan9",
text: "YOUR TEXT HERE."
}
];
const questionCount = document.getElementById("question-count");
questionCount.innerHTML = questionLength.toString();
displayNextQuestion();
}, 50);
}
const isTriviaCompleted = function() {
return questionLength === questionIndex;
};
function displayNextQuestion() {
const answersContainer = document.getElementById("answers-container");
const answerButtons = answersContainer.querySelectorAll(".default-button");
answerButtons.forEach(function(element) {
element.disabled = false;
element.classList.remove("correct");
element.classList.remove("wrong");
});
if (isTriviaCompleted()) {
showScores();
} else {
startProgressbar();
timer = window.setTimeout(function() {
guess(null);
}, 10000);
setQuizText("This is from");
const textElement = document.getElementById("question-placement");
textElement.innerHTML = questions[questionIndex].text;
const choices = questions[questionIndex].answers;
for (let i = 0; i < choices.length; i++) {
const element = document.getElementById(`answer${i}`);
element.innerHTML = choices[i];
element.addEventListener("click", handleAnswerClick);
}
showProgress();
}
}
function handleAnswerClick(e) {
const el = e.currentTarget;
const answer = el.innerHTML;
el.removeEventListener("click", handleAnswerClick);
guess(answer);
}
function showProgress() {
const questionIndexElement = document.getElementById("question-index");
const index = questionIndex + 1;
questionIndexElement.innerHTML = index.toString();
}
function guess(answer) {
clearTimeout(timer);
const answersContainer = document.getElementById("answers-container");
const answerButtons = answersContainer.querySelectorAll(".default-button");
answerButtons.forEach((element) => {
element.disabled = true;
if (element.innerHTML === questions[questionIndex].correct) {
element.classList.add("correct");
}
});
stopProgressbar();
if (questions[questionIndex].correct === answer) { // correct answer
score++;
setQuizText("Fantastic … Correct!");
} else if (answer) { // incorrect answer
setQuizText("Nice try … You were close.");
answerButtons.forEach((element) => {
if (element.innerHTML === answer) {
element.classList.add("wrong");
}
});
} else {
setQuizText("Your time is out! Oh no!");
}
questionIndex++;
window.setTimeout(function() {
displayNextQuestion();
}, 2500);
}
function setQuizText(text) {
const el = document.getElementById("trivia-text");
el.innerHTML = text;
}
function showScores() {
const scoreElement = document.getElementById("score");
const scoreTotalElement = document.getElementById("score-total");
const scoreNameElement = document.getElementById("score-name");
scoreElement.innerHTML = score.toString();
scoreTotalElement.innerHTML = questionLength.toString();
if (score < 4) {
scoreNameElement.innerHTML = "Newbie";
} else if (score < 7) {
scoreNameElement.innerHTML = "Rookie";
} else if (score < 10) {
scoreNameElement.innerHTML = "Expert";
} else {
scoreNameElement.innerHTML = "Grandmaster";
}
triviaScreen.classList.add("hidden");
resultScreen.classList.remove("hidden");
}
function startProgressbar() {
// select div turn into progressbar
const progressbar = document.getElementById("progress-bar");
progressbar.innerHTML = "";
// create div changes width show progress
const progressbarInner = document.createElement("span");
// Append progressbar to main progressbardiv
progressbar.appendChild(progressbarInner);
// When all set start animation
progressbarInner.style.animationPlayState = "running";
}
function stopProgressbar() {
const progressbar = document.getElementById("progress-bar");
const progressbarInner = progressbar.querySelector("span");
progressbarInner.style.animationPlayState = "paused";
}
}());
*,
*:after,
*:before {
box-sizing: border-box;
}
body {
margin: 0;
font-family: 'Verdana', cursive;
text-transform: uppercase;
color: #ccc;
letter-spacing: 2px;
}
.container {
background: #999999;
}
.wrapper {
max-width: 800px;
margin: auto;
}
.screen-section {
display: flex;
flex-direction: column;
align-items: center;
min-height: 100vh;
padding: 20px 20px 70px;
position: relative;
}
.hidden {
display: none;
}
.trivia-screen-step {
color: #ccc;
}
.trivia-image-wrapper {
max-width: 100%;
margin: 50px auto;
position: relative;
}
.trivia-image {
max-width: 100%;
width: 300px;
position: relative;
z-index: 1;
}
.trivia-timer {
width: 550px;
max-width: 100%;
height: 20px;
border-radius: 3em;
margin-bottom: 50px;
padding: 5px 6px;
}
.trivia-timer span {
display: inline-block;
background: linear-gradient(90deg, #fff, #06c);
height: 10px;
vertical-align: top;
border-radius: 3em;
animation: progressbar-countdown;
animation-duration: 10s;
animation-iteration-count: 1;
animation-fill-mode: forwards;
animation-play-state: paused;
animation-timing-function: linear;
}
#keyframes progressbar-countdown {
0% {
width: 100%;
}
100% {
width: 0%;
}
}
.trivia-question {
margin-bottom: 50px;
}
.how-to-play-screen .default-button {
margin-bottom: 60px;
margin-top: 30px;
}
.button-container {
display: flex;
flex-wrap: wrap;
margin-bottom: 50px;
width: 600px;
max-width: 100%;
}
.button-outer {
flex-basis: 100%;
text-align: center;
margin-bottom: 20px;
max-width: 100%;
}
.default-button {
background: #333333;
border-radius: 3em;
font-family: 'Verdana', cursive;
font-size: 18px;
color: #fff;
letter-spacing: 2.45px;
padding: 10px 8px;
text-transform: uppercase;
transition: background .2s;
outline: none;
width: 250px;
cursor: pointer;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
max-width: 100%;
}
.default-button:hover {
background: #222;
}
.default-button[disabled] {
background: transparent;
color: #222;
cursor: default;
}
.default-button[disabled]:hover {
background: transparent;
}
.default-button.correct {
cursor: default;
background: #2bb24a;
color: #fff;
}
.default-button.correct:hover {
background: #2bb24a;
color: #fff;
}
.default-button.wrong {
cursor: default;
background: #F6484C;
color: #fff;
}
.default-button.wrong:hover {
background: #F6484C;
color: #fff;
}
.title {
font-size: 32px;
margin-top: 100px;
}
.text {
line-height: 24px;
font-size: 16px;
font-family: 'Verdana', sans-serif;
text-align: center;
color: #ffffff;
text-transform: none;
}
.trivia-logo {
position: absolute;
bottom: 20px;
}
.trivia-corner-logo {
position: absolute;
left: 0;
top: 15px;
width: 100px;
}
.close-button {
position: absolute;
top: 50px;
right: 0;
background: transparent;
border: none;
color: #fff;
font-family: 'Verdana', cursive;
font-size: 34px;
outline: none;
text-transform: none;
cursor: pointer;
transition: color .2s;
}
.close-button:hover {
color: #eee;
}
.score-name {
margin: 0 0 28px;
font-size: 46px;
}
.score {
font-size: 18px;
margin-bottom: 10px;
}
.description {
text-align: center;
font-family: Verdana, sans-serif;
font-size: 16px;
color: #fff;
text-transform: none;
line-height: 24px;
display: inline-block;
margin-bottom: 30px;
}
#media screen and (min-width: 700px) {
.screen-section {
padding: 50px;
}
<div class="container">
<div class="wrapper">
<div class="screen-section main-screen">
<div class="trivia-image-wrapper">
<img alt="LOGO" src="./assets/Game-Logo.png" class="trivia-image">
</div>
<h1>Trivia</h1>
<div class="button-container">
<div class="button-outer">
<button class="default-button" id="play" type="button">Play</button>
</div>
<div class="button-outer">
<button class="default-button" id="how-to-play-button" type="button">How to play?</button>
</div>
</div>
<div class="trivia-logo">
<img alt="logo" src="./assets/-Logo.png">
</div>
</div>
<div class="screen-section hidden how-to-play-screen">
<img alt="LOGO" src="./assets/Game-Logo.png" class="trivia-corner-logo">
<button class="close-button" id="close-how-to" type="button">X</button>
<h2 class="title">How to Play</h2>
<p>Answer questions to score points.</p>
<button class="default-button" id="lets-start" type="button">Ok. Let's start</button>
<div class="trivia-logo">
<img alt="logo" src="./assets/-Logo.png">
</div>
</div>
<div class="screen-section hidden trivia-screen">
<div class="trivia-screen-step"><span id="question-index">1</span> out of <span id="question-count">10</span></div>
<div class="trivia-image-wrapper">
<p id="question-placement"></p>
</div>
<div class="trivia-timer" id="progress-bar"></div>
<div class="trivia-question" id="trivia-text"></div>
<div class="button-container" id="answers-container">
<div class="button-outer">
<button class="default-button" id="answer0" type="button"></button>
</div>
<div class="button-outer">
<button class="default-button" id="answer1" type="button"></button>
</div>
<div class="button-outer">
<button class="default-button" id="answer2" type="button"></button>
</div>
<div class="button-outer">
<button class="default-button" id="answer3" type="button"></button>
</div>
</div>
<div class="trivia-logo">
<img alt="logo" src="./assets/-Logo.png">
</div>
</div>
<div class="screen-section hidden result-screen">
<div class="trivia-image-wrapper">
<img alt="Trivia LOGO" src="./assets/Game-Logo.png" class="trivia-image">
</div>
<p class="score"><span id="score">0</span> out of <span id="score-total">10</span></p>
<h1 class="score-name" id="score-name">Trivia</h1>
<span class="description">you will learn more.</span>
<button class="default-button" id="play-again" type="button">Play again</button>
<div class="trivia-logo">
<img alt=" logo" src="./assets/-Logo.png">
</div>
</div>
</div>
</div>

In your case the best way would be to create an API (for example https://fastapi.tiangolo.com/) that would return a random question, but if you want to have it in a separate file you would simply have to move the variable questions to another javascript file and import it into the <head> of your web page.
To randomize the JSON you can use the following function:
function shuffleQuestions(questions) {
for (let i = questions.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[questions[i], questions[j]] = [questions[j], questions[i]];
}
}
(function() {
const playButton = document.querySelector("#play");
const letsstartButton = document.querySelector("#lets-start");
const playagainButton = document.querySelector("#play-again");
const howToPlayButton = document.querySelector("#how-to-play-button");
const closeHowToButton = document.querySelector("#close-how-to");
const howToPlayScreen = document.querySelector(".how-to-play-screen");
const mainScreen = document.querySelector(".main-screen");
const triviaScreen = document.querySelector(".trivia-screen");
const resultScreen = document.querySelector(".result-screen");
playButton.addEventListener("click", startTrivia);
letsstartButton.addEventListener("click", startTrivia);
playagainButton.addEventListener("click", startTrivia);
howToPlayButton.addEventListener("click", function() {
howToPlayScreen.classList.remove("hidden");
mainScreen.classList.add("hidden");
});
closeHowToButton.addEventListener("click", function() {
howToPlayScreen.classList.add("hidden");
mainScreen.classList.remove("hidden");
});
const questionLength = 10;
let questionIndex = 0;
let score = 0;
let questions = [];
let timer = null;
function startTrivia() {
//show spinner
questionIndex = 0;
questions = [];
score = 0;
window.setTimeout(function() {
//get questions from server
mainScreen.classList.add("hidden");
howToPlayScreen.classList.add("hidden");
resultScreen.classList.add("hidden");
triviaScreen.classList.remove("hidden");
questions = [{
answers: ["Roma", "Athens", "London", "Japan"],
correct: "Roma",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma1", "Athens1", "London1", "Japan1"],
correct: "Athens1",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma2", "Athens2", "London2", "Japan2"],
correct: "London2",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma3", "Athens3", "London3", "Japan3"],
correct: "London3",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma4", "Athens4", "London4", "Japan4"],
correct: "Athens4",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma5", "Athens5", "London5", "Japan5"],
correct: "Athens5",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma6", "Athens6", "London6", "Japan6"],
correct: "Roma6",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma7", "Athens7", "London7", "Japan7"],
correct: "Japan7",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma8", "Athens8", "London8", "Japan8"],
correct: "London8",
text: "YOUR TEXT HERE."
},
{
answers: ["Roma9", "Athens9", "London9", "Japan9"],
correct: "Japan9",
text: "YOUR TEXT HERE."
}
];
shuffleQuestions(questions);
const questionCount = document.getElementById("question-count");
questionCount.innerHTML = questionLength.toString();
displayNextQuestion();
}, 50);
}
const isTriviaCompleted = function() {
return questionLength === questionIndex;
};
function displayNextQuestion() {
const answersContainer = document.getElementById("answers-container");
const answerButtons = answersContainer.querySelectorAll(".default-button");
answerButtons.forEach(function(element) {
element.disabled = false;
element.classList.remove("correct");
element.classList.remove("wrong");
});
if (isTriviaCompleted()) {
showScores();
} else {
startProgressbar();
timer = window.setTimeout(function() {
guess(null);
}, 10000);
setQuizText("This is from");
const textElement = document.getElementById("question-placement");
textElement.innerHTML = questions[questionIndex].text;
const choices = questions[questionIndex].answers;
for (let i = 0; i < choices.length; i++) {
const element = document.getElementById(`answer${i}`);
element.innerHTML = choices[i];
element.addEventListener("click", handleAnswerClick);
}
showProgress();
}
}
function handleAnswerClick(e) {
const el = e.currentTarget;
const answer = el.innerHTML;
el.removeEventListener("click", handleAnswerClick);
guess(answer);
}
function showProgress() {
const questionIndexElement = document.getElementById("question-index");
const index = questionIndex + 1;
questionIndexElement.innerHTML = index.toString();
}
function guess(answer) {
clearTimeout(timer);
const answersContainer = document.getElementById("answers-container");
const answerButtons = answersContainer.querySelectorAll(".default-button");
answerButtons.forEach((element) => {
element.disabled = true;
if (element.innerHTML === questions[questionIndex].correct) {
element.classList.add("correct");
}
});
stopProgressbar();
if (questions[questionIndex].correct === answer) { // correct answer
score++;
setQuizText("Fantastic … Correct!");
} else if (answer) { // incorrect answer
setQuizText("Nice try … You were close.");
answerButtons.forEach((element) => {
if (element.innerHTML === answer) {
element.classList.add("wrong");
}
});
} else {
setQuizText("Your time is out! Oh no!");
}
questionIndex++;
window.setTimeout(function() {
displayNextQuestion();
}, 2500);
}
function setQuizText(text) {
const el = document.getElementById("trivia-text");
el.innerHTML = text;
}
function showScores() {
const scoreElement = document.getElementById("score");
const scoreTotalElement = document.getElementById("score-total");
const scoreNameElement = document.getElementById("score-name");
scoreElement.innerHTML = score.toString();
scoreTotalElement.innerHTML = questionLength.toString();
if (score < 4) {
scoreNameElement.innerHTML = "Newbie";
} else if (score < 7) {
scoreNameElement.innerHTML = "Rookie";
} else if (score < 10) {
scoreNameElement.innerHTML = "Expert";
} else {
scoreNameElement.innerHTML = "Grandmaster";
}
triviaScreen.classList.add("hidden");
resultScreen.classList.remove("hidden");
}
function startProgressbar() {
// select div turn into progressbar
const progressbar = document.getElementById("progress-bar");
progressbar.innerHTML = "";
// create div changes width show progress
const progressbarInner = document.createElement("span");
// Append progressbar to main progressbardiv
progressbar.appendChild(progressbarInner);
// When all set start animation
progressbarInner.style.animationPlayState = "running";
}
function stopProgressbar() {
const progressbar = document.getElementById("progress-bar");
const progressbarInner = progressbar.querySelector("span");
progressbarInner.style.animationPlayState = "paused";
}
function shuffleQuestions(questions) {
for (let i = questions.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[questions[i], questions[j]] = [questions[j], questions[i]];
}
}
}());
*,
*:after,
*:before {
box-sizing: border-box;
}
body {
margin: 0;
font-family: 'Verdana', cursive;
text-transform: uppercase;
color: #ccc;
letter-spacing: 2px;
}
.container {
background: #999999;
}
.wrapper {
max-width: 800px;
margin: auto;
}
.screen-section {
display: flex;
flex-direction: column;
align-items: center;
min-height: 100vh;
padding: 20px 20px 70px;
position: relative;
}
.hidden {
display: none;
}
.trivia-screen-step {
color: #ccc;
}
.trivia-image-wrapper {
max-width: 100%;
margin: 50px auto;
position: relative;
}
.trivia-image {
max-width: 100%;
width: 300px;
position: relative;
z-index: 1;
}
.trivia-timer {
width: 550px;
max-width: 100%;
height: 20px;
border-radius: 3em;
margin-bottom: 50px;
padding: 5px 6px;
}
.trivia-timer span {
display: inline-block;
background: linear-gradient(90deg, #fff, #06c);
height: 10px;
vertical-align: top;
border-radius: 3em;
animation: progressbar-countdown;
animation-duration: 10s;
animation-iteration-count: 1;
animation-fill-mode: forwards;
animation-play-state: paused;
animation-timing-function: linear;
}
#keyframes progressbar-countdown {
0% {
width: 100%;
}
100% {
width: 0%;
}
}
.trivia-question {
margin-bottom: 50px;
}
.how-to-play-screen .default-button {
margin-bottom: 60px;
margin-top: 30px;
}
.button-container {
display: flex;
flex-wrap: wrap;
margin-bottom: 50px;
width: 600px;
max-width: 100%;
}
.button-outer {
flex-basis: 100%;
text-align: center;
margin-bottom: 20px;
max-width: 100%;
}
.default-button {
background: #333333;
border-radius: 3em;
font-family: 'Verdana', cursive;
font-size: 18px;
color: #fff;
letter-spacing: 2.45px;
padding: 10px 8px;
text-transform: uppercase;
transition: background .2s;
outline: none;
width: 250px;
cursor: pointer;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
max-width: 100%;
}
.default-button:hover {
background: #222;
}
.default-button[disabled] {
background: transparent;
color: #222;
cursor: default;
}
.default-button[disabled]:hover {
background: transparent;
}
.default-button.correct {
cursor: default;
background: #2bb24a;
color: #fff;
}
.default-button.correct:hover {
background: #2bb24a;
color: #fff;
}
.default-button.wrong {
cursor: default;
background: #F6484C;
color: #fff;
}
.default-button.wrong:hover {
background: #F6484C;
color: #fff;
}
.title {
font-size: 32px;
margin-top: 100px;
}
.text {
line-height: 24px;
font-size: 16px;
font-family: 'Verdana', sans-serif;
text-align: center;
color: #ffffff;
text-transform: none;
}
.trivia-logo {
position: absolute;
bottom: 20px;
}
.trivia-corner-logo {
position: absolute;
left: 0;
top: 15px;
width: 100px;
}
.close-button {
position: absolute;
top: 50px;
right: 0;
background: transparent;
border: none;
color: #fff;
font-family: 'Verdana', cursive;
font-size: 34px;
outline: none;
text-transform: none;
cursor: pointer;
transition: color .2s;
}
.close-button:hover {
color: #eee;
}
.score-name {
margin: 0 0 28px;
font-size: 46px;
}
.score {
font-size: 18px;
margin-bottom: 10px;
}
.description {
text-align: center;
font-family: Verdana, sans-serif;
font-size: 16px;
color: #fff;
text-transform: none;
line-height: 24px;
display: inline-block;
margin-bottom: 30px;
}
#media screen and (min-width: 700px) {
.screen-section {
padding: 50px;
}
<div class="container">
<div class="wrapper">
<div class="screen-section main-screen">
<div class="trivia-image-wrapper">
<img alt="LOGO" src="./assets/Game-Logo.png" class="trivia-image">
</div>
<h1>Trivia</h1>
<div class="button-container">
<div class="button-outer">
<button class="default-button" id="play" type="button">Play</button>
</div>
<div class="button-outer">
<button class="default-button" id="how-to-play-button" type="button">How to play?</button>
</div>
</div>
<div class="trivia-logo">
<img alt="logo" src="./assets/-Logo.png">
</div>
</div>
<div class="screen-section hidden how-to-play-screen">
<img alt="LOGO" src="./assets/Game-Logo.png" class="trivia-corner-logo">
<button class="close-button" id="close-how-to" type="button">X</button>
<h2 class="title">How to Play</h2>
<p>Answer questions to score points.</p>
<button class="default-button" id="lets-start" type="button">Ok. Let's start</button>
<div class="trivia-logo">
<img alt="logo" src="./assets/-Logo.png">
</div>
</div>
<div class="screen-section hidden trivia-screen">
<div class="trivia-screen-step"><span id="question-index">1</span> out of <span id="question-count">10</span></div>
<div class="trivia-image-wrapper">
<p id="question-placement"></p>
</div>
<div class="trivia-timer" id="progress-bar"></div>
<div class="trivia-question" id="trivia-text"></div>
<div class="button-container" id="answers-container">
<div class="button-outer">
<button class="default-button" id="answer0" type="button"></button>
</div>
<div class="button-outer">
<button class="default-button" id="answer1" type="button"></button>
</div>
<div class="button-outer">
<button class="default-button" id="answer2" type="button"></button>
</div>
<div class="button-outer">
<button class="default-button" id="answer3" type="button"></button>
</div>
</div>
<div class="trivia-logo">
<img alt="logo" src="./assets/-Logo.png">
</div>
</div>
<div class="screen-section hidden result-screen">
<div class="trivia-image-wrapper">
<img alt="Trivia LOGO" src="./assets/Game-Logo.png" class="trivia-image">
</div>
<p class="score"><span id="score">0</span> out of <span id="score-total">10</span></p>
<h1 class="score-name" id="score-name">Trivia</h1>
<span class="description">you will learn more.</span>
<button class="default-button" id="play-again" type="button">Play again</button>
<div class="trivia-logo">
<img alt=" logo" src="./assets/-Logo.png">
</div>
</div>
</div>
</div>

Getting an unexpected token error in React

This is my first time using react and I have somewhat limited experience with javascript in general. Trying to adapt a project I found on codepen for my project. The idea being creating a dynamic graded quiz that returns some output if a user selects the wrong answer.
This is what I have as my html:
{% load static %}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="{% static 'second/css/app/quiz_control.css' %}">
<script src="https://unpkg.com/react#16/umd/react.development.js" crossorigin></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.development.js" crossorigin></script>
<script src="{% static 'second/js/app/quiz_control.js' %}" defer></script>
</head>
<main class="container">
<section id="riots-to-renaissance">
</section>
</main>
</html>
javascript:
const RawHTML = (props) => <span dangerouslySetInnerHTML={{__html: props.html}}></span>;
class QuestionImage extends React.Component {
constructor(props) {
super(props);
this.imgRef = React.createRef();
}
componentDidUpdate(prevProps, prevState) {
if (this.imgRef.current && prevProps.img.src !== this.props.img.src) {
this.imgRef.current.classList.add('fade-in');
let timer = setTimeout(() => {
this.imgRef.current.classList.remove('fade-in');
clearTimeout(timer);
}, 1000)
}
}
render() {
return (
<img ref={this.imgRef} className="img-fluid" src={this.props.img.src} alt={this.props.img.alt} />
);
}
}
const QuizProgress = (props) => {
return (
<div className="progress">
<p className="counter">
<span>Question {props.currentQuestion+1} of {props.questionLength}</span>
</p>
<div className="progress-bar" style={{'width': ((props.currentQuestion+1) / props.questionLength) * 100 + '%'}}></div>
</div>
);
}
const Results = (props) => {
return (
<div className="results fade-in">
<h1>Your score: {((props.correct/props.questionLength) * 100).toFixed()}%</h1>
<button type="button" onClick={props.startOver}>Try again <i className="fas fa-redo"></i></button>
</div>
);
}
class Quiz extends React.Component {
constructor(props) {
super(props);
this.updateAnswer = this.updateAnswer.bind(this);
this.checkAnswer = this.checkAnswer.bind(this);
this.nextQuestion = this.nextQuestion.bind(this);
this.getResults = this.getResults.bind(this);
this.startOver = this.startOver.bind(this);
this.state = {
currentQuestion: 0,
correct: 0,
inProgress: true,
questions: [{
question: "<em>A Raisin in the Sun</em> was the first play by an African-American woman to be produced on Broadway. Who was the playwright?",
options: [{
option: "Lorraine Hansberry",
correct: true
}, {
option: "Maya Angelou",
correct: false
}],
img: {
src: 'https://interactive.wttw.com/sites/default/files/dusable-to-obama_raisin-in-the-sun.jpg',
alt: 'Characters in A Raisin in the Sun'
},
feedback: "Lorraine Hansberry's (1930–1965) play opened in 1959 to critical acclaim and was a huge success. The play is about a black family who faces racism when moving into an all-white suburb. The play is drawn from a similar experience in Hansberry’s early life.",
moreUrl: 'https://interactive.wttw.com/dusable-to-obama/hansberrys-victory'
}, {
question: "The internationally famous Harlem Globetrotters basketball team started with players from which Chicago High School?",
options: [{
option: "Wendell Phillips High School",
correct: true
}, {
option: "DuSable High School",
correct: false
}],
img: {
src: 'https://interactive.wttw.com/sites/default/files/dusable/riots_renaissance_thumb_5.jpg',
alt: 'A Harlem Globetrotter holding a basketball in each hand'
},
feedback: "The athletes who would become Harlem Globetrotters first played together as students at Wendell Phillips High School on the south side of Chicago. Later, they played as a team under the banner of the South Side's Giles Post of the American Legion and then as the Savoy Big Five before taking on their current name. The team was based in Chicago for 50 years, from 1926 through 1976.",
moreUrl: 'https://interactive.wttw.com/dusable-to-obama/harlem-globetrotters'
}, {
question: "What Chicagoan is known as the father of Gospel Music?",
options: [{
option: "Thomas A. Dorsey",
correct: true
}, {
option: "Langston Hughes",
correct: false
}],
img: {
src: 'https://interactive.wttw.com/sites/default/files/dusable-to-obama_thomas-dorsey.jpg',
alt: 'Thomas Andrew Dorsey'
},
feedback: "Some.",
moreUrl: 'https://interactive.wttw.com/dusable-to-obama/dorseys-gospel'
}, {
question: "Which of these African-American women ran for the office of president of the United States?",
options: [{
option: "All of the above",
correct: true
}, {
option: "None of the above",
correct: false
}],
img: {
src: 'https://interactive.wttw.com/sites/default/files/dusable/achieving_dream_thumb_9.jpg',
alt: 'Carol Moseley-Braun'
},
feedback: "more text.\"",
moreUrl: 'https://interactive.wttw.com/dusable-to-obama/carol-moseley-braun'
}, {
question: "Who was Oscar Stanton De Priest?",
options: [{
option: "The first Catholic priest in Chicago",
correct: false
}, {
option: "A United States congressman",
correct: true
}],
img: {
src: 'https://interactive.wttw.com/sites/default/files/dusable-to-obama_oscar-stanton-de-priest.jpg',
alt: 'Oscar Stanton De Priest'
},
feedback: "Text again.",
moreUrl: 'https://interactive.wttw.com/dusable-to-obama/carol-moseley-braun'
}, {
question: "What musical artist was part of Chicago's Black Renaissance?",
options: [{
option: "Louis Armstrong",
correct: false
}, {
option: "Nat \"King\" Cole",
correct: true
}, {
option: "Curtis Mayfield",
correct: false
}],
img: {
src: 'https://interactive.wttw.com/sites/default/files/dusable-to-obama_nat-king-cole.jpg',
alt: 'Nat King Cole'
},
feedback: "Long text.",
moreUrl: 'https://interactive.wttw.com/dusable-to-obama/dorseys-gospel'
}, {
question: "Gwendolyn Brooks was:",
options: [{
option: "the first black woman to win a Pulitzer Prize in poetry.",
correct: false
}, {
option: "all of the above",
correct: true
}],
img: {
src: 'https://interactive.wttw.com/sites/default/files/dusable-to-obama_gwendolyn-brooks.jpg',
alt: 'Gwendolyn Brooks'
},
feedback: "Gwendolyn Brooks (1917–2000) is a jewel in Chicago’s literary history. She was a writer best known for her poetry describing life in the South Side community in which she lived."
}]
}
}
updateAnswer(e) {
//record whether the question was answered correctly
let answerValue = e.target.value;
this.setState((prevState, props) => {
let stateToUpdate = prevState.questions;
//convert boolean string to boolean with JSON.parse()
stateToUpdate[prevState.currentQuestion].answerCorrect = JSON.parse(answerValue);
return {questions: stateToUpdate};
});
}
checkAnswer(e) {
//display to the user whether their answer is correct
this.setState((prevState, props) => {
let stateToUpdate = prevState.questions;
stateToUpdate[prevState.currentQuestion].checked = true;
return {questions: stateToUpdate};
});
}
nextQuestion(e) {
//advance to the next question
this.setState((prevState, props) => {
let stateToUpdate = prevState.currentQuestion;
return {currentQuestion: stateToUpdate+1};
}, () => {
this.radioRef.current.reset();
});
}
getResults() {
//loop through questions and calculate the number right
let correct = this.state.correct;
this.state.questions.forEach((item, index) => {
if (item.answerCorrect) {
++correct;
}
if (index === (this.state.questions.length-1)) {
this.setState({
correct: correct,
inProgress: false
});
}
});
}
startOver() {
//reset form and state back to its original value
this.setState((prevState, props) => {
let questionsToUpdate = prevState.questions;
questionsToUpdate.forEach(item => {
//clear answers from previous state
delete item.answerCorrect;
delete item.checked;
});
return {
inProgress: true,
correct: 0,
currentQuestion: 0,
questions: questionsToUpdate
}
});
}
componentDidMount() {
//since we're re-using the same form across questions,
//create a ref to it so we can clear its state after a question is answered
this.radioRef = React.createRef();
}
render() {
if (!this.state.inProgress) {
return (
<section className="quiz">
<Results correct={this.state.correct} questionLength={this.state.questions.length} startOver={this.startOver} />
</section>
);
}
return (
<section className="quiz fade-in" aria-live="polite">
<QuizProgress currentQuestion={this.state.currentQuestion} questionLength={this.state.questions.length} />
<div className="question-container">
{this.state.questions[this.state.currentQuestion].img.src &&
<QuestionImage img={this.state.questions[this.state.currentQuestion].img} />
}
<p className="question"><RawHTML html={this.state.questions[this.state.currentQuestion].question} /></p>
<form ref={this.radioRef}>
{this.state.questions[this.state.currentQuestion].options.map((item, index) => {
return <div key={index}
className={"option" + (this.state.questions[this.state.currentQuestion].checked && !item.correct ? ' dim' : '') + (this.state.questions[this.state.currentQuestion].checked && item.correct ? ' correct' : '')}>
<input id={"radio-"+index} onClick={this.updateAnswer} type="radio" name="option" value={item.correct}
disabled={this.state.questions[this.state.currentQuestion].checked} />
<label htmlFor={"radio-"+index}><RawHTML html={item.option}/></label>
</div>
})}
</form>
<div className="bottom">
{this.state.questions[this.state.currentQuestion].feedback && this.state.questions[this.state.currentQuestion].checked
&& <div className="fade-in">
<p>
<RawHTML html={this.state.questions[this.state.currentQuestion].feedback} />
{this.state.questions[this.state.currentQuestion].moreUrl &&
<React.Fragment>
<a target="_blank" href={this.state.questions[this.state.currentQuestion].moreUrl}>Learn more</a>.
</React.Fragment>
}
</p>
</div>
}
{!this.state.questions[this.state.currentQuestion].checked &&
<button type="button" onClick={this.checkAnswer}
disabled={!('answerCorrect' in this.state.questions[this.state.currentQuestion])}>Check answer</button>
}
{(this.state.currentQuestion+1) < this.state.questions.length && this.state.questions[this.state.currentQuestion].checked &&
<button className="fade-in next" type="button" onClick={this.nextQuestion}>Next <i className="fa fa-arrow-right"></i></button>
}
</div>
{(this.state.currentQuestion+1) === this.state.questions.length && this.state.questions[this.state.currentQuestion].checked &&
<button type="button" className="get-results pulse" onClick={this.getResults}>Get Results</button>
}
</div>
</section>
)
}
}
document.addEventListener('DOMContentLoaded', () => {
ReactDOM.render(<Quiz />, document.getElementById('riots-to-renaissance'));
})
and css
#import url('https://fonts.googleapis.com/css?family=Open+Sans');
#green: #36ad3b;
#red: #ff1100;
#yellow: #f3c000;
#blue: #1d77cc;
#sans: "Open Sans", "Helvetica", "Arial", sans-serif;
#keyframes roll-in {
0% {
top: 10px;
opacity: 0;
}
100% {
top: 0;
opacity: 1;
}
}
#keyframes fade {
from {
opacity: 0;
}
to {
opacity: 1;
}
}
#keyframes pulse {
from {
transform: scale3d(1, 1, 1);
}
50% {
transform: scale3d(1.05, 1.05, 1.05);
}
to {
transform: scale3d(1, 1, 1);
}
}
.pulse {
animation: pulse 1s infinite;
}
.fade-in {
animation: fade .75s ease;
}
.quiz {
margin: 2em auto;
min-height: 40vh;
font-size: 16px;
.progress {
position: relative;
transition: width .4s ease;
margin-bottom: 1em;
background: rgb(181, 181, 181);
border-radius: 0;
width: 100%;
height: 2em;
font-family: #sans;
.progress-bar {
background-color: #1d77cc;
}
.counter {
position: absolute;
right: 5px;
top: 0;
font-weight: normal;
color: #fff;
height: 100%;
font-family: #sans;
font-size:1.25em;
margin: auto .5em;
letter-spacing:.025em;
display: flex;
flex-direction: column;
justify-content: center;
}
}
form {
width:90%;
margin:1.5em auto;
}
.img-fluid {
margin: 2em auto;
max-width: 360px;
display: block;
}
.question {
font-weight:bold;
line-height:1.35;
margin-bottom:.75em;
}
.option {
margin-bottom: .25em;
transition: all .25s ease;
font-size: .9em;
}
button {
padding: .75em;
font-family: #sans;
background-color: #1d77cc;
border: 0;
color: #fff;
font-size: 1em;
transition: .25s all;
white-space: nowrap;
font-weight: bold;
cursor: pointer;
i {
margin-left: .15em;
}
&:disabled {
opacity: .5;
}
}
//custom radio controls
input[type="radio"] {
position: absolute;
left: -9999px;
& + label {
position: relative;
font-weight: normal;
padding-left: 28px;
cursor: pointer;
line-height: 20px;
display: inline-block;
color: #666;
&::before {
text-align: center;
content: '';
position: absolute;
left: 0;
top: 0;
width: 20px;
height: 20px;
border: 1px solid #ddd;
border-radius: 100%;
background: #fff;
}
&::after {
content: '';
width: 12px;
height: 12px;
background-color: #222;
position: absolute;
top: 4px;
left: 4px;
border-radius: 100%;
transition: all 0.2s ease;
}
}
}
.dim, .correct {
input[type="radio"] + label::before {
border: 0;
font-size: 1.2em;
animation: .25s roll-in ease;
}
input[type="radio"] + label::after {
display: none;
}
}
.correct input[type="radio"] + label:before {
content: '\f00C';
font-family: "FontAwesome"!important;
color: #green;
}
.dim input[type="radio"]:checked + label:before {
content: '\f00d';
font-family: "FontAwesome"!important;
color: #red;
}
input[type="radio"]:not(:checked) + label:after {
opacity: 0;
transform: scale(0);
}
input[type="radio"]:checked + label:after {
opacity: 1;
transform: scale(1);
}
//end custom radio controls
.dim {
opacity: 0.5;
}
.bottom {
width:90%;
margin:0 auto;
display: flex;
flex-wrap: wrap;
align-items: flex-start;
justify-content: space-between;
div {
flex: 1 1 70%;
font-size: .9em;
}
.next {
flex: 0 1 10%;
margin-left: 3em;
}
#media (max-width: 600px) {
div, .next {
flex-basis: 100%;
}
.next {
margin-left: 0;
}
}
}
.get-results {
display: block;
margin: 2em auto;
}
.results {
font-size: 1.1em;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
min-height: 40vh;
h1 {
font-family: #sans;
}
button {
margin-top: 1em;
}
}
}
When I check my browser console, I get the error message:
Uncaught SyntaxError: Unexpected token '<'

How to update the 'sortNotes' function with the new input data?

I am doing a note app:
I created in javascript a const 'notes' that assigs an array of objects inside. Each object has a title and description with respective values.
Created a function assigned to a const 'sortNotes' which sorts the objects by ordering alphabetically by his title( a to z).
created a function assigned to a const 'notesOutput' that creates for Each object an element (h5) for the title and a (p) for the description.
created a function assigned to a const 'newNote' that creates a new object in the array with the same properties (title and description)
finally, but not least, created an event listener to the form with submit event. It´s responsible to take the value of the title input and description input when clicked on the button submit.
then I call the function 'newNote' with correct arguments to create a new Object inside the array. -- apparently it works.
Called the function 'notesOutput' to show in the output the new note with title and description -- apparently it works
before, I called the function 'sortNotes' that is responsible to order alphabetically from A to Z the notes. What happens is that doesn´t work as I expected. It doesn't take to count the notes that are already there in the output and the notes that are newly created after so it´s not well organized. I suppose that I have to update something in this function 'sortNotes' responsible to sort() but I can´t figure out what.
const notes = [{
title: 'Bank',
description: 'Save 100€ every month to my account'
}, {
title: 'Next trip',
description: 'Go to spain in the summer'
}, {
title: 'Health',
description: 'Dont´forget to do the exams'
}, {
title: 'Office',
description: 'Buy a better chair and a better table to work'
}]
const sortNotes = function(notes) {
const organize = notes.sort(function(a, b) {
if (a.title < b.title) {
return -1
} else if (a.title > b.title) {
return 1
} else {
return 0
}
})
return organize
}
sortNotes(notes)
const notesOutput = function(notes) {
const ps = notes.forEach(function(note) {
const title = document.createElement('h5')
const description = document.createElement('p')
title.textContent = note.title
description.textContent = note.description
document.querySelector('#p-container').appendChild(title)
document.querySelector('#p-container').appendChild(description)
})
return ps
}
notesOutput(notes)
const newNote = function(titleInput, descriptionInput) {
notes.push({
title: titleInput,
description: descriptionInput
})
}
const form = document.querySelector('#form-submit')
const inputTitle = document.querySelector('#form-input-title')
inputTitle.focus()
form.addEventListener('submit', function(e) {
e.preventDefault()
const newTitle = e.target.elements.titleNote.value
const newDescription = e.target.elements.descriptionNote.value
newNote(newTitle, newDescription)
sortNotes(notes)
notesOutput(notes)
console.log(notes)
e.target.elements.titleNote.value = ''
e.target.elements.descriptionNote.value = ''
inputTitle.focus()
})
* {
font-family: 'Roboto', sans-serif;
color: white;
letter-spacing: .1rem;
margin: 0;
padding: 0;
box-sizing: border-box;
}
html {
font-size: 100%;
}
body {
min-height: 100vh;
display: flex;
justify-content: center;
align-items: center;
}
.container {
background-color: seagreen;
padding: 2rem;
}
.container-p {
padding: 2rem 0;
}
form {
width: 100%;
display: flex;
flex-direction: column;
align-items: flex-start;
}
label {
text-transform: uppercase;
font-weight: 600;
letter-spacing: .25rem;
}
input,
textarea {
width: 100%;
padding: .5rem;
margin: 1rem 0;
color: #0d4927;
font-weight: bold;
font-size: 1rem;
}
.container-submit__button {
font-size: 1rem;
font-weight: bold;
text-transform: uppercase;
color: #0d4927;
padding: 1rem 2rem;
border: 2px solid #0d4927;
cursor: pointer;
margin: 1rem 0;
align-self: flex-end;
}
h1 {
font-size: 2rem;
letter-spacing: .3rem;
}
h2 {
font-size: 1.5rem;
font-weight: 300;
}
h5 {
font-size: 1.05rem;
margin: 1rem 0 .8rem 0;
padding: .4rem;
letter-spacing: .12rem;
display: inline-block;
border: 2px solid;
}
<div class="container" id="app-container">
<h1>NOTES APP</h1>
<h2>Take notes and never forget</h2>
<div id="p-container" class="container-p">
</div>
<div class="container-submit" id="app-container-submit">
<form action="" id="form-submit">
<label for="">Title</label>
<input type="text" class="input-title" id="form-input-title" name="titleNote">
<label for="">Description</label>
<textarea name="descriptionNote" id="form-input-description" cols="30" rows="10"></textarea>
<button class="container-submit__button" id="app-button" type="submit">Add Notes</button>
</form>
</div>
</div>

sort sorts the array in place so you do not need a function that returns something to nowhere
Your sort was case sensitive. Remove toLowerCase if you want to make it case sensitive again
Do NOT pass notes in the function. It needs to be a global object
Empty the container before outputting
No need to return stuff that is not used
let notes = [{
title: 'Bank',
description: 'Save 100€ every month to my account'
}, {
title: 'Office',
description: 'Buy a better chair and a better table to work'
}, {
title: 'Health',
description: 'Dont´forget to do the exams'
}, {
title: 'Next trip',
description: 'Go to spain in the summer'
}]
const sortNotes = function(a, b) {
if (a.title.toLowerCase() < b.title.toLowerCase()) {
return -1
} else if (a.title.toLowerCase() > b.title.toLowerCase()) {
return 1
} else {
return 0
}
}
const notesOutput = function() {
document.querySelector('#p-container').innerHTML = "";
notes.sort(sortNotes)
notes.forEach(function(note) {
const title = document.createElement('h5')
const description = document.createElement('p')
title.textContent = note.title
description.textContent = note.description
document.querySelector('#p-container').appendChild(title)
document.querySelector('#p-container').appendChild(description)
})
}
const newNote = function(titleInput, descriptionInput) {
notes.push({
title: titleInput,
description: descriptionInput
})
}
const form = document.querySelector('#form-submit')
const inputTitle = document.querySelector('#form-input-title')
form.addEventListener('submit', function(e) {
e.preventDefault()
const newTitle = e.target.elements.titleNote.value
const newDescription = e.target.elements.descriptionNote.value
newNote(newTitle, newDescription)
notesOutput(notes)
e.target.elements.titleNote.value = ''
e.target.elements.descriptionNote.value = ''
inputTitle.focus()
})
notesOutput()
inputTitle.focus()
* {
font-family: 'Roboto', sans-serif;
color: white;
letter-spacing: .1rem;
margin: 0;
padding: 0;
box-sizing: border-box;
}
html {
font-size: 100%;
}
body {
min-height: 100vh;
display: flex;
justify-content: center;
align-items: center;
}
.container {
background-color: seagreen;
padding: 2rem;
}
.container-p {
padding: 2rem 0;
}
form {
width: 100%;
display: flex;
flex-direction: column;
align-items: flex-start;
}
label {
text-transform: uppercase;
font-weight: 600;
letter-spacing: .25rem;
}
input,
textarea {
width: 100%;
padding: .5rem;
margin: 1rem 0;
color: #0d4927;
font-weight: bold;
font-size: 1rem;
}
.container-submit__button {
font-size: 1rem;
font-weight: bold;
text-transform: uppercase;
color: #0d4927;
padding: 1rem 2rem;
border: 2px solid #0d4927;
cursor: pointer;
margin: 1rem 0;
align-self: flex-end;
}
h1 {
font-size: 2rem;
letter-spacing: .3rem;
}
h2 {
font-size: 1.5rem;
font-weight: 300;
}
h5 {
font-size: 1.05rem;
margin: 1rem 0 .8rem 0;
padding: .4rem;
letter-spacing: .12rem;
display: inline-block;
border: 2px solid;
}
<div class="container" id="app-container">
<h1>NOTES APP</h1>
<h2>Take notes and never forget</h2>
<div id="p-container" class="container-p">
</div>
<div class="container-submit" id="app-container-submit">
<form action="" id="form-submit">
<label for="">Title</label>
<input type="text" class="input-title" id="form-input-title" name="titleNote">
<label for="">Description</label>
<textarea name="descriptionNote" id="form-input-description" cols="30" rows="10"></textarea>
<button class="container-submit__button" id="app-button" type="submit">Add Notes</button>
</form>
</div>
</div>

vue checkbox doesn't bind data correctly by v-model

I have a todolist that you can add new todo, and mark each todo as completed by click checkbox, and select the item visibility of the list by all or active or completed on the footer.
When I select Completed on the footer, it only shows item that is completed.
The problem is when I unmark the completed item in completed view, the remain(especially next one) item's checkbox display incorrectly.
var STORAGE_KEY = 'todo mvc by vue';
var todoStorage = {
data: [],
fetch: function () {
return this.data;
},
save: function (data) {
this.data = data;
//localStorage.setItem(STORAGE_KEY, JSON.stringify(data));
}
}
var filters = {
all: function (todos) {
return todos;
},
active: function (todos) {
return todos.filter(todo => !todo.completed);
},
completed: function (todos) {
return todos.filter(todo => todo.completed);
}
}
var app = new Vue({
el: '.app',
data: {
todos: todoStorage.fetch(),
newTodo: '',
visiblitys: [{
title: 'All',
selected: true,
filter: filters.all
}, {
title: 'Active',
selected: false,
filter: filters.active
}, {
title: 'Completed',
selected: false,
filter: filters.completed
}]
},
computed: {
todosForShow: function () {
return this.currentFilter(this.todos);
},
currentFilter: function () {
return this.visiblitys.find(v => v.selected).filter;
}
},
watch: {
todos: {
handler: function (todos) {
todoStorage.save(todos);
},
deep: true
}
},
methods: {
deleteItem: function (todo) {
this.todos.splice(this.todos.indexOf(todo), 1);
},
deleteCompletedItem: function () {
this.todos = filters.active(this.todos);
},
addItem: function (todo) {
var value = this.newTodo && this.newTodo.trim();
if (!value) return;
this.todos.push({
content: value,
completed: false
});
this.newTodo = '';
},
selectVisiblity: function (visiblity) {
this.visiblitys.forEach(vis => vis.selected = false);
visiblity.selected = true;
},
completeAll: function () {
this.todos.forEach(todo => todo.completed = true);
}
}
});
* {
box-sizing: border-box;
}
header h1 {
text-align: center;
}
.container {
max-width: 800px;
margin: 0 auto;
}
.new-todo {
padding: 16px;
box-shadow: inset 0 -2px 1px rgba(0, 0, 0, 0.03);
font-size: 24px;
width: 100%;
}
li.completed {
text-decoration: line-through;
}
footer {
border-top: 1px solid #e6e6e6;
height: 20px;
padding: 10px 15px;
color: #777;
text-align: center;
position: relative;
}
.filters {
list-style: none;
margin: 0;
padding: 0;
position: absolute;
left: 0;
right: 0;
}
.filters li {
display: inline;
}
.filters li a {
margin: 3px;
padding: 3px 7px;
text-decoration: none;
border: 1px solid transparent;
border-radius: 3px;
color: inherit;
}
.filters li a.selected {
border-color: rgba(175, 47, 47, 0.2);
}
.todo-count {
float: left;
text-align: left;
}
.complete-all {
float: right;
cursor: pointer;
position: relative;
color: black;
}
.todo-list {
clear: both;
}
.clear-completed {
float: right;
cursor: pointer;
position: relative;
}
button {
margin: 0;
padding: 0;
border: 0;
background: none;
font-size: 100%;
vertical-align: baseline;
font-family: inherit;
font-weight: inherit;
color: inherit;
-webkit-font-smoothing: antialiased;
}
<header>
<h1>Todos</h1>
</header>
<div class="app container">
<input class="new-todo" type="text" v-on:keyup.enter="addItem()" v-model="newTodo"
placeholder="What needs to be done?">
<section class="main" v-show="todos.length > 0">
<button class="complete-all" #click="completeAll()">Complete All</button>
<ul class="todo-list">
<li v-for="todo in todosForShow" :class="{completed: todo.completed}">
<input type="checkbox" v-model="todo.completed">
{{todo.content}} -
remove
</li>
</ul>
<footer>
<span class="todo-count">{{todos.filter(t=>!t.completed).length}} items left</span>
<ul class="filters">
<li v-for="visiblity in visiblitys">
<a href="#" :class="{selected: visiblity.selected}"
#click.prevent="selectVisiblity(visiblity)">{{visiblity.title}}</a>
</li>
</ul>
<button class="clear-completed" v-show="todos.some(t=>t.completed)" #click="deleteCompletedItem()">Clear
Completed</button>
</footer>
</section>
<br>todos raw data：{{this.todos}}
</div>
<script src="https://cdn.jsdelivr.net/npm/vue"></script>
begin
select the completed in the footer
after uncheck first item

something wrong while getting data from url app made in vue js and axios

trying to replace customer js with
export default[
{ id: 0, name: 'some one', title: 'zero' },
{ id: 1, name: 'test last', title:'one'},
{ id: 2, name: 'test first', title:'two'},
{ id: 3, name: 'test second', title:'three'},
{ id: 4, name: 'test third', title:'four'},
{ id: 5, name: 'test fourth', title:'five'},
{ id: 6, name: 'test fifth', title:'six'}
];
My app is fine while using the above raw json.
since i am trying to get the date using axios in same file as per below code
Something i am missing to get the data into app.
import axios from 'axios';
export default {
data () {
return {
info: []
}
},
mounted () {
axios
.get('http://localhost/json/test.json')
.then(response => (this.info = response))
}
}
for getting data from url into customer.js
not working in case.
while my app.vue is
<template>
<div id="app">
<Autocomplete :items="customers"
filterby="name"
#change="onChange"
title="Look for a customer"
#selected="customerSelected"/>
</div>
</template>
<script>
import customers from './assets/customers';
import Autocomplete from './components/Autocomplete'
export default {
name: 'App',
mounted() {
this.customers = customers;
},
data() {
return {
customers: []
};
},
methods: {
customerSelected(customer) {
console.log(`Customer Selected:\nid: ${customer.id}\nname: ${customer.name}\ntitle:${customer.title}`);
},
onChange(value) {
// do something with the current value
}
},
components: {
Autocomplete
}
}
</script>
<style>
#app {
margin: 0px auto;
margin-top: 60px;
width: 400px;
}
</style>
and Autocomplete.vue is
<template>
<div class="autocomplete">
<div class="input" #click="toggleVisible" v-text="selectedItem ? selectedItem[filterby] : ''"></div>
<div class="placeholder" v-if="selectedItem == null" v-text="title"></div>
<button class="close" #click="selectedItem = null" v-if="selectedItem">x</button>
<div class="popover" v-show="visible">
<input type="text"
ref="input"
v-model="query"
#keydown.up="up"
#keydown.down="down"
#keydown.enter="selectItem"
placeholder="Start Typing...">
<div class="options" ref="optionsList">
<ul>
<li v-for="(match, index) in matches"
:key="index"
:class="{ 'selected': (selected == index)}"
#click="itemClicked(index)"
v-text="match[filterby]"></li>
</ul>
</div>
</div>
</div>
</template>
<script>
export default {
props: {
items: {
default: [],
type: Array
},
filterby: {
type: String
},
title: {
default: 'Select One...',
type: String
},
shouldReset: {
type: Boolean,
default: true
}
},
data() {
return {
itemHeight: 39,
selectedItem: null,
selected: 0,
query: '',
visible: false
};
},
methods: {
toggleVisible() {
this.visible = !this.visible;
setTimeout(() => {
this.$refs.input.focus();
}, 50);
},
itemClicked(index) {
this.selected = index;
this.selectItem();
},
selectItem() {
if (!this.matches.length) {
return;
}
this.selectedItem = this.matches[this.selected];
this.visible = false;
if (this.shouldReset) {
this.query = '';
this.selected = 0;
}
this.$emit('selected', JSON.parse(JSON.stringify(this.selectedItem)));
},
up() {
if (this.selected == 0) {
return;
}
this.selected -= 1;
this.scrollToItem();
},
down() {
if (this.selected >= this.matches.length - 1) {
return;
}
this.selected += 1;
this.scrollToItem();
},
scrollToItem() {
this.$refs.optionsList.scrollTop = this.selected * this.itemHeight;
}
},
computed: {
matches() {
this.$emit('change', this.query);
if (this.query == '') {
return [];
}
return this.items.filter((item) => item[this.filterby].toLowerCase().includes(this.query.toLowerCase()))
}
}
}
</script>
<style scoped>
.autocomplete {
width: 100%;
position: relative;
}
.input {
height: 40px;
border-radius: 3px;
border: 2px solid lightgray;
box-shadow: 0 0 10px #eceaea;
font-size: 25px;
padding-left: 10px;
padding-top: 10px;
cursor: text;
}
.close {
position: absolute;
right: 2px;
top: 4px;
background: none;
border: none;
font-size: 30px;
color: lightgrey;
cursor: pointer;
}
.placeholder {
position: absolute;
top: 11px;
left: 11px;
font-size: 25px;
color: #d0d0d0;
pointer-events: none;
}
.popover {
min-height: 50px;
border: 2px solid lightgray;
position: absolute;
top: 46px;
left: 0;
right: 0;
background: #fff;
border-radius: 3px;
text-align: center;
}
.popover input {
width: 95%;
margin-top: 5px;
height: 40px;
font-size: 16px;
border-radius: 3px;
border: 1px solid lightgray;
padding-left: 8px;
}
.options {
max-height: 150px;
overflow-y: scroll;
margin-top: 5px;
}
.options ul {
list-style-type: none;
text-align: left;
padding-left: 0;
}
.options ul li {
border-bottom: 1px solid lightgray;
padding: 10px;
cursor: pointer;
background: #f1f1f1;
}
.options ul li:first-child {
border-top: 2px solid #d6d6d6;
}
.options ul li:not(.selected):hover {
background: #8c8c8c;
color: #fff;
}
.options ul li.selected {
background: orange;
color: #fff;
font-weight: 600;
}
</style>

In most of the cases, response consists of several properties and you will need response.data.
if this didn't work then print the response, using console.log(response) and inspect it such that which key holds the JSON data.