I am creating my program which takes the user input on an Enter key.
I use the userInput with .value in the if statement and it works perfectly. But when I try to use it as a variable, nothing is outputted and nothing is in the console.
I tried to do querySelector("input['name = "command"]') to see if it might work but again, nothing outputted and it showed nothing in the console
var userInput = document.querySelector("input[name = 'command']")
var theInput = userInput.value.toLowerCase();
var theConsole = document.querySelector("#console");
theConsole.scrollTop = theConsole.scrollHeight;
var myScroll = document.getElementById("scroll");
function doAThing(event) {
var theKeyCode = event.keyCode;
if(theKeyCode === 13) {
acceptCommand();
setInterval(scrollUpdate, 1000)
}
}
function scrollUpdate() {
myScroll.scrollTop = myScroll.scrollHeight;
}
function acceptCommand() {
var p = document.createElement("p");
if(theInput=== "help") theConsole.append("Help is given!", p);
//using the keywords
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body id = "scroll">
<div id="game">
<div id="console">
</div>
</div>
<div id = "command-box">
<div id = "cmd">
<input type = "text" name = "command" id = "command" onkeypress = "doAThing(event);">
</div>
</div>
</div>
</body>
</html>
Replace the div#console element:
<div id="console">
to this input:
<input type="text" id="console">
You will want to refer to userInput.value instead of theInput. Because theInput is set to the value at the time of setting the variable and it doesn't get updated even though the value of userInput changing.
Related
what I'm trying to do is. when I click
function runIt(text) {
var counter = 1;
var comment = document.getElementById("name");
comment.innerText = text;
comment.cloneNode(true);
comment.id += counter;
}
document.addEventListener("click", function(e){
runIt("test")
}, true);
I want it to ADD a new element underneath that output "test".
it's keep getting replaced. :(
HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>t</title>
</head>
<body>
<p id="name" class="someclass"></p>
</body>
</html>
cloneNode returns the new code, which you can then append to the DOM. Also counter should be defined outside the function and then incremented each time.
var counter = 1;
function runIt(text) {
var comment = document.getElementById("name");
newcomment = comment.cloneNode(true);
newcomment.innerText = text;
newcomment.id += counter;
counter++;
document.querySelector('body').append(newcomment)
}
document.addEventListener("click", function(e){
runIt("test")
}, true);
<p id="name" class="someclass">-</p>
I have 2 html files connected to one js file. When I try to access a html element in the second html file using js it doesn't work saying that is is null. I did
let elementname = document.getElementById("element") for a element in the second html page then
console.log(elementname) and it says it is null. When I do it for a element in the first html page it says HTMLButtonElement {}
Here is the html for the first Page
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Not Quuuuiiiizzzz</title>
<link href="style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<h1>Not Quuuuiiiizzzz</h1>
<h2>Join a quiz</h2>
<!--Buttons -->
<div style="text-align: center;">
<button id="btnforquiz1" onclick="gotoquiz()"></button>
<button id="btnforquiz2" onclick="gotoquiz1()"></button>
<button id="btnforquiz3" onclick="gotoquiz2()"></button>
</div>
<h2 id="h2">Create a Quuuuiiiizzzz</h2>
<script src="script.js"></script>
</body>
</html>
For the second page
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>Not Quuuuiiiizzzz</title>
<link href="style.css" rel="stylesheet" type="text/css" />
</head>
<body onload="quizLoad()">
<h1 id="question">Hello</h1>
<button id="answer1"></button>
<button id="answer2"></button>
<button id="answer3"></button>
<button id="answer4"></button>
<script src="script.js"></script>
</body>
</html>
And Finally for the js file :
//setting global variables
let btn1 = document.getElementById("btnforquiz1") //getting button with id of btnforquiz1 repeat below
correct = 0
let btn2 = document.getElementById("btnforquiz2")
let btn3 = document.getElementById("btnforquiz3")
let question = document.getElementById("question")
let answer1 = document.getElementById("answer1")
let answer2 = document.getElementById("answer2")
let answer3 = document.getElementById("answer3")
let answer4 = document.getElementById("answer4")
quizNameRel = -1;
cosnole.log(question)
console.log(answer1)
//Quiz Data
Quiz_1 = {
"What is the capital of buffalo":["Idk", "Yes", "No",0],
"What is the smell of poop": ["Stinky"]
};
Quiz_2 = [
"What is wrong with you"
];
Quiz_3 = [
"What is wrong with you #2"
]
let quiz = {
name: ["History Test", "Math Practice", "ELA Practice"],
mappingtoans: [0,1,2],
QA: [Quiz_1, Quiz_2, Quiz_3]
}
//quiz data
//when body loades run showQuizzs function
document.body.onload = showQuizzs()
function showQuizzs() {
//loops throo the vals seeting the text for the btns
for (let i = 0; i < quiz.name.length; i++) {
btn1.textContent = quiz.name[i-2]
btn2.textContent = quiz.name[i-1]
btn3.textContent = quiz.name[i]
}
}
//leads to the showQuizzs
function gotoquiz() {
location.href = "quiz.html"
quizNameRel = quiz.name[0]//I was trying to create a relation so we could knoe which quiz they wnt to do
startQuiz()
}
function gotoquiz1() {
location.href = "quiz.html"
quizNameRel = quiz.name[1]
startQuiz()
}
function gotoquiz2() {
location.href = "quiz.html";
quizNameRel = quiz.name[2];
startQuiz();
}
function answerselect(elements){
whichone = Number(elements.id.slice(-2,-1))
if(Quiz_1[whichone]==Quiz_1[-1]){
correct+=1;
NextQuestion();
}else{
wrong+=1;
}
}
//gets the keys and puts it into an array
function getkeys(dictionary){
tempdict = [];
for(i in dictionary){
tempdict.push(i);
}
return tempdict;
}
function setQuestion() {
let tempdict = getkeys(Quiz_1)
console.log(tempdict, getkeys(Quiz_1));
//question.innerHTML = tempdict;
}
// startQuiz
function startQuiz() {
switch (quizNameRel){
case quiz.name[0]:
//case here
setQuestion()
break
case quiz.name[1]:
//case here
break
case quiz.name[2]:
//case here
break
}
}
//TO DO:
// Set the question
// Set the answer
// Check if correct button
This is happening because at a time you have rendered only one html file. For example if you render index1.html(first file) then your js will look for rendered element from first file only but here index2.html(second file) is not rendered so your js script is unable to find elements of that file that's the reason it shows null.
If you try to render now index2.html rather than index1.html then you will find now elements from index2.html are detected by js script but elements from index1.html are null now.
I have written this code which I thought was correct, but although it runs without error, nothing is replaced.
Also I am not sure what event I should use to execute the code.
The test a simple template for a landing page. The tokens passed in on the url will be used to replace tags or tokens in the template.
<!DOCTYPE html>
<html>
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script>
// gets passed variables frm the url
function getQueryVar(str) {
return 'Newtext'; // JUST SCAFFOLD FOR TESTING
}
function searchReplace() {
/**/
var t = 0;
var tags = Array('keyword', 'locale', 'advert_ID');
if (document.readyState === 'complete') {
var str = document.body.innerText;
for (t = 0; t < tags.length; t++) {
//replace in str every instance of the tag with the correct value
if (tags[t].length > 0) {
var sToken = '{ltoken=' + tags[t] + '}';
var sReplace = getQueryVar(tags[t]);
str.replace(sToken, sReplace);
} else {
var sToken = '{ltoken=' + tags[t] + '}'
var sReplace = '';
str.replace(sToken, sReplace);
//str.replace(/sToken/g,sReplace); //all instances
}
}
document.body.innerText = str;
}
}
</script>
</head>
<body>
<H1> THE HEADING ONE {ltoken=keyword}</H1>
<H2> THE HEADING TWO</H2>
<H3> THE HEADING THREE</H3>
<P>I AM A PARAGRAPH {ltoken=keyword}</P>
<div>TODO write content</div>
<input type="button" onclick="searchReplace('keyword')">
</body>
</html>
So when the documment has finished loading I want to execute this code and it will replace {ltoken=keyword} withe value for keyword returned by getQueryVar.
Currently it replaces nothing, but raises no errors
Your problem is the fact you don't reassign the replacement of the string back to it's parent.
str.replace(sToken,sReplace);
should be
str = str.replace(sToken,sReplace);
The .replace method returns the modified string, it does not perform action on the variable itself.
Use innerHTML instead innerText and instead your for-loop try
tags.forEach(t=> str=str.replace(new RegExp('{ltoken='+ t+'}','g'), getQueryVar(t)))
<!DOCTYPE html>
<html>
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script>
// gets passed variables frm the url
function getQueryVar(str)
{
return'Newtext';// JUST SCAFFOLD FOR TESTING
}
function searchReplace() {
/**/
var t=0;
var tags =Array('keyword','locale','advert_ID');
if (document.readyState==='complete'){
var str = document.body.innerHTML;
tags.forEach(t=> str=str.replace(new RegExp('{ltoken='+ t+'}','g'), getQueryVar(t)));
//tags.forEach(t=> str=str.replace(new RegExp('{ltoken='+ tags[t]+'}', 'g'), getQueryVar(tags[t])));
document.body.innerHTML=str;
}
}
</script>
</head>
<body >
<H1> THE HEADING ONE {ltoken=keyword}</H1>
<H2> THE HEADING TWO</H2>
<H3> THE HEADING THREE</H3>
<P>I AM A PARAGRAPH {ltoken=keyword}</P>
<div>TODO write content</div>
<input type ="button" onclick="searchReplace('keyword')" value="Clicke ME">
</body>
</html>
I'm using the getElementByClassName function to change the displayed text.
I'm running into 2 different problems.
Problem 1:
I want to change my <title></title> to the value of var value.
It doesnt work the like the displayed text in the body element.
Problem 2:
Now I'm using 4 different variables because I can only declare a getElementsbyClassName once every class. I there a way to write this code more beautiful/compacter?
Any help would be appricated,
<!DOCTYPE html>
<html lang="">
<head>
<title><!--VALUE HERE<div class="div0"></div>--></title>
</head>
<body>
<div class="div1"></div>
<div class="div2"></div>
<div class="div3"></div>
<script>
var value= "Banana";
//var vartest0 = document.getElementsByClassName("div0");
var vartest1 = document.getElementsByClassName("div1");
var vartest2 = document.getElementsByClassName("div2");
var vartest3 = document.getElementsByClassName("div3");
//vartest0[0].innerHTML = value;
vartest1[0].innerHTML = value;
vartest2[0].innerHTML = value;
vartest3[0].innerHTML = value;
</script>
</body>
</html>
To set the value for title, you need to do document.title = "Banana"; or document.title = value;.
<!DOCTYPE html>
<html lang="">
<head>
<title></title>
</head>
<body>
<div class="div1"></div>
<div class="div2"></div>
<div class="div3"></div>
<script>
var value= "Banana";
document.title = value;
var vartest1 = document.getElementsByClassName("div1");
var vartest2 = document.getElementsByClassName("div2");
var vartest3 = document.getElementsByClassName("div3");
//vartest0[0].innerHTML = value;
vartest1[0].innerHTML = value;
vartest2[0].innerHTML = value;
vartest3[0].innerHTML = value;
</script>
</body>
</html>
I’d suggest:
// use document.querySelectorAll() to retrieve all the elements
document.querySelectorAll(".div1,.div2,.div3")
// use NodeList.forEach() to iterate over all the
// returned Nodes
.forEach(
// using an Arrow function ("el" is a reference to the
// current Node of the NodeList), here we update the
// textContent of each Node to the "value" variable:
(el) => el.textContent = value);
// and set the document.title to that same variable:
document.title = value;
Please note that I am not using classes. I haven't found an answer for this SPECIFIC question.
Using javascript, how can I program a button to change the stylesheet each time the button is clicked?
I've tried different if, else if and else, but when I try them, it breaks the code (ie, it will change the color to blue if red, but not back again).
It works with 2 buttons, but getting it to change each time a single button is clicked seems to be eluding me. I got feed up and programmed a second button to change it back.
This works for 2 buttons:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>"Your Title Here"</title>
<link id="um" rel="stylesheet" href="stylesheet1.css">
<style>
</style>
</head>
<body>
<p>booga</p>
<button id="x" onclick="myFunction()">blue</button>
<button id="x1" onclick="myFunction1()">red</button>
<script>
function myFunction() {
if (document.getElementById("um").href = "stylesheet1.css"){
document.getElementById("um").href = "stylesheet2.css"}
}
function myFunction1() {
if (document.getElementById("um").href = "stylesheet2.css"){
document.getElementById("um").href = "stylesheet1.css"}
}
</script>
</body>
I would like to be able to get rid of the second button and second function and have it all with one button.
EDIT...
I tried this, and it failed.
function myFunction() {
if (document.getElementById("um").href == "stylesheet1.css")
{document.getElementById("um").href = "stylesheet2.css"};
else {document.getElementById("um").href = "stylesheet1.css"}
}
Make sure you're using == instead of = for your comparisons!
if (document.getElementById("um").href == "stylesheet1.css")
etc
Try this:
<button id="x" onclick="myFunction()">Change</button>
<script>
function myFunction() {
var link = document.getElementById("um");
var segments = link.href.split('/');
var currentStyle = segments[segments.length - 1];
var style = (currentStyle == 'stylesheet1.css') ? 'stylesheet2'
: 'stylesheet1';
document.getElementById("um").href = style + ".css"
}
</script>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>"Your Title Here"</title>
<link id="um" rel="stylesheet" href="stylesheet1.css">
</head>
<body>
<p>booga</p>
<button onclick="myFunction('um','stylesheet1.css', 'stylesheet2.css')">swap</button>
<script>
function myFunction(id,a,b) {
var el = document.getElementById(id);
var hrefStr;
if(~el.href.indexOf(a)) {
hrefStr = el.href.replace(a, b);
el.href = hrefStr;
} else {
hrefStr = el.href.replace(b, a);
el.href = hrefStr;
}
}
</script>
</body>
</html>