I'm creating a quiz that requires every answer to be answered. The problem is that you should be able to skip questions if you don't have an answer. I'm trying to set a default answer everytime I press next so when I try to skip one I don't have to answer for it to have a value. The default value I want is each time the last value of my array.
next and previous question
SetQuestion(question) {
if (this.questionNumber >= 0) {
let oldAnswerButton = document.querySelectorAll('.filter_anwser');
// Deletes old question when the next question is clicked
for (let answerButton of oldAnswerButton) {
answerButton.style.display = 'none';
}
}
this.questionNumber = question;
let q = this.quiz[question];
// Check if your at the last question so the next button will stop being displayed.
if (this.questionNumber === Quiz.length - 1) {
this.nextbtn.style.display = 'none';
this.prevbtn.style.display = 'block';
this.resultbtn.style.display = 'grid';
} else if (this.questionNumber === 0) {
this.nextbtn.style.display = 'block';
this.prevbtn.style.display = 'none';
this.resultbtn.style.display = 'none';
} else {
this.nextbtn.style.display = 'block';
this.prevbtn.style.display = 'block';
this.resultbtn.style.display = 'none';
}
// Displays Question
this.questionName.textContent = q.questionText;
this.questionName.id = "questionID";
return q;
console.log(this.getLink())
console.log(this.tmp)
}
IntoArray() {
const UrlVar = new URLSearchParams(this.getLink())
this.UrlArray = [...UrlVar.entries()].map(([key, values]) => (
{[key]: values.split(",")}
)
);
}
NextQuestion() {
// let quizUrl = this.url[this.questionNumber];
let question = this.SetQuestion(this.questionNumber + 1);
let pre = question.prefix;
let prefixEqual = pre.replace('=', '');
let UrlArr = this.UrlArray;
let UrlKeys = UrlArr.flatMap(Object.keys)
let answers = question.chosenAnswer.slice(0, -1);
this.clicked = true;
// Displays answers of the questions
for (let y = 0; y < answers.length; y++) {
let item = answers[y];
// Display answer buttons
if (UrlKeys.includes(prefixEqual)) {
console.log("exists");
let btn = document.querySelector('button[value="' + item.id + '"]');
btn.style.display = 'block';
} else {
let btn = document.createElement('button');
btn.value = item.id;
btn.classList.add("filter_anwser", pre)
btn.id = 'answerbtn';
btn.textContent = item.name;
this.button.appendChild(btn);
}
// let quizUrl = control.url[control.questionNumber];
// // console.log(this.tmp);
// if (quizUrl === undefined) {
// quizUrl.push(question.prefix[y] + '');
// }
// if (quizUrl === undefined){
// this.tmp.push('');
// }
}
this.IntoArray();
}
PrevQuestion() {
let question = this.SetQuestion(this.questionNumber - 1);
let answers = question.chosenAnswer.slice(0, -1);
// Displays answers of the questions
for (let y = 0; y < answers.length; y++) {
let item = answers[y];
// Display answer buttons
let btn = document.querySelector('button[value="' + item.id + '"]');
btn.style.display = 'block';
}
this.IntoArray();
}
Link creator:
/**
* Returns the parameters for the URL.
*
* #returns {string}
*/
getLink() {
this.tmp = [];
for (let i = 0; i < this.url.length; i++) {
// Check if question is from the same quiz part and adds a , between chosen answers and add the right prefix at the beginning
if (this.url[i].length > 0) {
this.tmp.push("" + Quiz[i].prefix + this.url[i].join(","))
// console.log(this.url)
}
if (this.url[i].length === 0) {
this.tmp.push("");
}
}
/// If answers are from different quiz parts add a & between answers.
return "" + this.tmp.join("&");
// console.log(this.url[i].prefix);
};
Answer click event
control.button.addEventListener("click", function (e) {
const tgt = e.target;
control.clicked = true;
// clear the url array if there's nothing clicked
if (control.url.length === control.questionNumber) {
control.url.push([]);
}
let quizUrl = control.url[control.questionNumber];
// Check if a button is clicked. Changes color and adds value to the url array.
if (quizUrl.indexOf(tgt.value) === -1) {
quizUrl.push(tgt.value);
e.target.style.backgroundColor = "orange";
// Check if a button is clicked again. If clicked again changes color back and deletes value in the url array.
} else {
quizUrl.splice(quizUrl.indexOf(tgt.value), 1);
e.target.style.backgroundColor = "white";
}
console.log(control.getLink());
console.log(quizUrl)
})
array:
class QuizPart {
constructor(questionText, chosenAnswer, prefix, questionDescription) {
this.questionText = questionText;
this.chosenAnswer = chosenAnswer;
this.prefix = prefix;
this.questionDescription = questionDescription;
}
}
class ChosenAnswer {
constructor(id, name) {
this.id = id;
this.name = name;
}
}
let Quiz = [
new QuizPart('Whats your size?', [
new ChosenAnswer('6595', '41'),
new ChosenAnswer('6598', '42'),
new ChosenAnswer('6601', '43'),
new ChosenAnswer('', ''),
], 'bd_shoe_size_ids=',
'The size of your shoes is very important. If you have the wrong size, they wont fit.'),
new QuizPart('What color would you like?', [
new ChosenAnswer('6053', 'Red'),
new ChosenAnswer('6044', 'Blue'),
new ChosenAnswer('6056', 'Yellow'),
new ChosenAnswer('6048', 'Green'),
new ChosenAnswer('', ''),
], 'color_ids=',
'Color isn t that important, It looks good tho.'),
new QuizPart('What brand would you like?', [
new ChosenAnswer('5805', 'Adidas'),
new ChosenAnswer('5866', 'Nike'),
new ChosenAnswer('5875', 'Puma'),
new ChosenAnswer('', ''),
], 'manufacturer_ids=',
'Brand is less important. Its just your own preference'),
]
I tried giving the array's in link creator and my eventlistener a default value and replacing it when I get and actual value from one of my buttons, but it just doesn't work. Can anybody help me?
I understand, that it might be a bit far from what you expect for an answer - but why don't you have a look at a reactive tool, like Vue? It has all the tools that you might need for such a task, and maybe more:
the whole quiz can be abstracted to a simple array of objects (the questions)
next, prev, set default answer becomes a breeze
easy to extend (with questions)
simple to update (template, features, etc.)
Vue.component('QuizQuestion', {
props: ['data', 'selected'],
computed: {
valSelected: {
get() {
return this.selected
},
set(val) {
this.$emit('update:selected', val)
}
},
},
template: `
<div>
{{ data.text }}<br />
{{ data.description }}<br />
<div class="quiz-options">
<label
v-for="val in data.options"
:key="val[0]"
>
<input
type="radio"
:name="data.text"
:value="val"
v-model="valSelected"
/>
{{ val[1] }}
</label>
</div>
</div>
`
})
new Vue({
el: "#app",
computed: {
currentQuestion() {
return this.questions[this.current]
},
hasPrev() {
return !!this.current
},
hasNext() {
return this.current < this.questions.length - 1
},
},
data() {
return {
current: 0,
questions: [{
text: 'Whats your size?',
description: 'The size of your shoes is very important. If you have the wrong size, they wont fit.',
options: [
['6595', '41'],
['6598', '42'],
['6601', '43'],
['', ''],
],
selected: null,
}, {
text: 'What color would you like?',
description: 'Color isn\'t that important, It looks good tho.',
options: [
['6053', 'Red'],
['6044', 'Blue'],
['6056', 'Yellow'],
['6048', 'Green'],
['', ''],
],
selected: null,
}, {
text: 'What brand would you like?',
description: 'Brand is less important. Its just your own preference',
options: [
['5805', 'Adidas'],
['5866', 'Nike'],
['5875', 'Puma'],
['', ''],
],
selected: null,
}, ],
}
},
methods: {
selectDefault() {
this.questions[this.current] = {
...this.questions[this.current],
selected: this.questions[this.current].options.slice(-1)[0],
}
},
getPrev() {
if (this.hasPrev) {
if (!this.currentQuestion.selected) {
this.selectDefault()
}
this.current -= 1
}
},
getNext() {
if (this.hasNext) {
if (!this.currentQuestion.selected) {
this.selectDefault()
}
this.current += 1
}
},
},
template: `
<div>
<quiz-question
:data="currentQuestion"
:selected.sync="currentQuestion.selected"
/><br />
<button v-if="hasPrev" #click="getPrev">PREV</button>
<button v-if="hasNext" #click="getNext">NEXT</button>
<button v-if="!hasNext">RESULT</button>
</div>
`
})
.quiz-options {
display: flex;
flex-direction: column;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app"></div>
EDIT
But, if frameworks/libraries are not to be used, here's a more OOP approach:
class Quiz {
constructor(questions) {
this._current = 0
this._questions = questions
}
get current() {
return this._current
}
set current(val) {
this._current = val
}
get hasNext() {
return this.current < this.questions.length - 1
}
get hasPrev() {
return !!this.current
}
get questions() {
return this._questions
}
get next() {
this.current = this.hasNext ? this.current + 1 : this.current
return this.currentQuestion
}
get prev() {
this.current = this.hasPrev ? this.current - 1 : this.current
return this.currentQuestion
}
get currentQuestion() {
return this.questions[this.current]
}
}
class Question {
constructor({
text,
description,
options,
prefix,
}) {
this.text = text
this.desc = description
this.prefix = prefix
this._options = options.map(([key, val]) => ({
id: key,
value: [key, val],
selected: false,
}))
}
get options() {
return this._options
}
set options(newOptions) {
this._options = newOptions
}
get selected() {
return this.options.find(({
selected
}) => !!selected)
}
set selected(selectedVal) {
this.options = [...this.options.map(({
value: [key, val],
selected,
...rest
}) => {
return {
...rest,
value: [key, val],
selected: key === selectedVal
}
})]
}
get lastOption() {
return this.options.slice(-1)[0]
}
setDefault() {
if (!this.selected) {
this.selected = this.lastOption.id
}
}
}
const urlParser = (quiz) => {
return quiz.questions.map(({
prefix,
selected = {
value: ['']
}
}) => {
const s = selected.value[0] ? selected.value[0] : ''
return `${prefix}${s}`
}).join('&')
}
const qArr = [{
text: 'text1',
description: 'desc1',
options: [
['1_1', '11'],
['1_2', '12'],
['1_3', '13'],
],
prefix: 'prefix_1_',
},
{
text: 'text2',
description: 'desc2',
options: [
['2_1', '21'],
['2_2', '22'],
['2_3', '23'],
],
prefix: 'prefix_2_',
},
{
text: 'text3',
description: 'desc3',
options: [
['3_1', '31'],
['3_2', '32'],
['3_3', '33'],
],
prefix: 'prefix_3_',
},
]
const getOptionsHtml = ({
text,
options
}) => {
let html = ''
options.forEach(({
id,
value,
selected
}, i) => {
html += `
<label>
<input
class="question-input"
type="radio"
name="${text}"
value="${value[0]}"
${selected ? 'checked' : ''}
/>
${value[1]}
</label>
`
})
return html
}
const getSingleQuestionHtml = (q) => {
const optionsHtml = getOptionsHtml({
text: q.text,
options: q.options
})
return `
${q.text}<br />
${q.desc}<br />
${optionsHtml}
`
}
const registerEventHandlers = ({
container,
question
}) => {
const radioBtns = document.querySelectorAll('.question-input')
radioBtns.forEach((input, i) => {
input.addEventListener('change', function(e) {
question.selected = e.target.value
})
})
}
const updateHtml = ({
container,
question
}) => {
container.innerHTML = getSingleQuestionHtml(question)
registerEventHandlers({
container,
question
})
};
const updateContainer = (container) => (question) => updateHtml({
container,
question
});
const setElDisplay = ({
el,
display
}) => {
if (display) {
el.classList.add("d-inline-block")
el.classList.remove("d-none")
} else {
el.classList.remove("d-inline-block")
el.classList.add("d-none")
}
}
const updateBtnVisibility = ({
btnNext,
btnPrev,
btnResult,
quiz
}) => () => {
setElDisplay({
el: btnNext,
display: quiz.hasNext
})
setElDisplay({
el: btnResult,
display: !quiz.hasNext
})
setElDisplay({
el: btnPrev,
display: quiz.hasPrev
})
}
(function() {
const quiz = new Quiz(qArr.map(q => new Question(q)))
const container = document.getElementById('quiz-container')
updateQuizContainer = updateContainer(container)
updateQuizContainer(quiz.currentQuestion)
const btnPrev = document.getElementById('btn-prev')
const btnNext = document.getElementById('btn-next')
const btnResult = document.getElementById('btn-result')
const updateBtns = updateBtnVisibility({
btnPrev,
btnNext,
btnResult,
quiz
})
updateBtns()
btnPrev.addEventListener('click', function() {
if (quiz.hasPrev) {
quiz.currentQuestion.setDefault()
}
updateQuizContainer(quiz.prev)
updateBtns()
})
btnNext.addEventListener('click', () => {
if (quiz.hasNext) {
quiz.currentQuestion.setDefault()
}
updateQuizContainer(quiz.next)
updateBtns()
})
btnResult.addEventListener('click', function() {
quiz.currentQuestion.setDefault()
console.log(urlParser(quiz))
})
})();
.d-inline-block {
display: inline-block;
}
.d-none {
display: none;
}
<div id="quiz-container"></div>
<div id="quiz-controls">
<button id="btn-prev" class="d-inline-block">
PREV
</button>
<button id="btn-next" class="d-inline-block">
NEXT
</button>
<button id="btn-result" class="d-none">
RESULT
</button>
</div>
<div id="result"></div>
I have below method where i am using reducer to set these dictionaries "earliestOptionByInitialRevision" and "latestOptionByInitialRevision" inside the reducer and the code is looks like as below
const lookups = optionsInput?.reduce(
(acc, option) => {
const [optionById, earliestOptionByInitialRevision, latestOptionByInitialRevision] = acc;
optionById[option.id] = option;
const isCustomProject = option.initialRevisionId === null || option.initialRevisionId === undefined;
if (
isCustomProject ||
!earliestOptionByInitialRevision[option.initialRevisionId] ||
option.revision < earliestOptionByInitialRevision[option.initialRevisionId].revision
) {
// trying to extract the below into common
//function because in below if condition i have used the same and difference is
// "earliestOptionByInitialRevision"
if (isCustomProject) {
option = {...option, initialRevisionId:'customProjectOption'}
if (!earliestOptionByInitialRevision[option.initialRevisionId])
{
earliestOptionByInitialRevision[option.initialRevisionId] = [option];
} else {
earliestOptionByInitialRevision[option.initialRevisionId].push(option);
}
} else {
earliestOptionByInitialRevision[option.initialRevisionId] = option;
}
}
if (
isCustomProject ||
!latestOptionByInitialRevision[option.initialRevisionId] ||
option.revision > latestOptionByInitialRevision[option.initialRevisionId].revision
) {
// the below if condition same as with above and the difference
// is "latestOptionByInitialRevision"
if (isCustomProject) {
option = {...option, initialRevisionId:'customProjectOption'}
if (!latestOptionByInitialRevision[option.initialRevisionId]) {
latestOptionByInitialRevision[option.initialRevisionId] = [option];
} else {
latestOptionByInitialRevision[option.initialRevisionId].push(option);
}
} else {
latestOptionByInitialRevision[option.initialRevisionId] = option;
}
}
return acc;
},
[{}, {}, {}]
) ?? [{}, {}, {}];
const [optionById, earliestOptionByInitialRevision, latestOptionByInitialRevision] = lookups;
i would like to extract the below common functionality but could not be able to get through on how to achieve the same. Could any one please help on this that would be very grateful to me
if (isCustomProject) {
option = {...option, initialRevisionId:'customProjectOption'}
if (!earliestOptionByInitialRevision[option.initialRevisionId]) {
earliestOptionByInitialRevision[option.initialRevisionId] = [option];
} else {
earliestOptionByInitialRevision[option.initialRevisionId].push(option);
}
} else {
earliestOptionByInitialRevision[option.initialRevisionId] = option;
}
Many thanks in advance
update:
A quick fix could be to extract the common functionality into a function, parameterised by the dict (JavaScript object).
const optionsInput = [{
id: 1,
revision: 2
},
{
id: 2,
revision: 1
},
];
const lookups = optionsInput?.reduce(
(acc, option) => {
const [optionById, earliestOptionByInitialRevision, latestOptionByInitialRevision] = acc;
optionById[option.id] = option;
const isCustomProject = option.initialRevisionId === null || option.initialRevisionId === undefined;
const updateDict = (dict) => {
if (isCustomProject) {
const newOption = {...option, initialRevisionId:'customProjectOption'}
if (!dict[option.initialRevisionId]) {
dict[option.initialRevisionId] = [newOption];
} else {
dict[option.initialRevisionId].push(newOption);
}
} else {
dict[option.initialRevisionId] = option;
}
};
if (isCustomProject || !earliestOptionByInitialRevision[option.initialRevisionId] || option.revision < earliestOptionByInitialRevision[option.initialRevisionId].revision) {
updateDict(earliestOptionByInitialRevision);
}
if (isCustomProject || !latestOptionByInitialRevision[option.initialRevisionId] || option.revision > latestOptionByInitialRevision[option.initialRevisionId].revision) {
updateDict(latestOptionByInitialRevision);
}
return acc;
},
[{}, {}, {}]
) ?? [{}, {}, {}];
console.log(lookups);
genderPie()
let filter = {};
async function genderPie() {
const d = await getData();
const g = await d.reduce((a, o) => (o.GEN && a.push(o.GEN), a), []);
const gender = Object.keys(g).length;
const m = await d.reduce((a, o) => (o.GEN == 1 && a.push(o.GEN), a), []);
const male = Object.keys(m).length;
const f = await d.reduce((a, o) => (o.GEN == 2 && a.push(o.GEN), a), []);
const female = Object.keys(f).length;
var data = [{
name: 'male',
y: male,
id: 1
}, {
name: 'female',
y: female,
id: 2
}];
chart = new Highcharts.Chart({
plotOptions: {
pie: {
innerSize: '80%',
dataLabels: {
connectorWidth: 0
}
}
},
series: [{
"data": data,
type: 'pie',
animation: false,
point: {
events: {
click: function(event) {
filter.GEN = '' + this.id + '';
}
}
}
}],
"chart": {
"renderTo": "gender"
},
});
}
async function getData() {
buildFilter = (filter) => {
let query = {};
for (let keys in filter) {
if (filter[keys].constructor === Array && filter[keys].length > 0) {
query[keys] = filter[keys];
}
}
return query;
}
//FILTER DATA
//Returns the filtered data
filterData = (dataset, query) => {
const filteredData = dataset.filter((item) => {
for (let key in query) {
if (item[key] === undefined || !query[key].includes(item[key])) {
return false;
}
}
return true;
});
return filteredData;
};
//FETCH JSON
const dataset = [{
"GEN": "2"
}, {
"GEN": "1"
}, {
"GEN": "1"
}, {
"GEN": "2"
},
{
"GEN": "2"
}, {
"GEN": "2"
}, {
"GEN": "2"
}, {
"GEN": "1"
}
]
//BUILD THE FILTER
const query = buildFilter(filter);
const result = filterData(dataset, query);
console.log(result)
return result
}
<script src="https://code.highcharts.com/highcharts.js"></script>
<div id="gender"></div>
does anyone can explain me how to handle the following?
I have two functions that filter data and than I build a chart with Hichart
Each time a user click for example a slice of a pie chart an event is fired and an object is populated.
That object allows me to filter the dataset and redraw the chart
The last thing I'm missing is about to update the filtering functions based on the object to be populated
first I'll do this
async function getData() {
buildFilter = (filter) => {
let query = {};
for (let keys in filter) {
if (filter[keys].constructor === Array && filter[keys].length > 0) {
query[keys] = filter[keys];
}
}
return query;
}
then
filterData = (data, query) => {
const filteredData = data.filter( (item) => {
for (let key in query) {
if (item[key] === undefined || !query[key].includes(item[key])) {
return false;
}
}
return true;
});
return filteredData;
};
const query = buildFilter(filter);
const result = filterData(data, query);
my object is
let filter = {}
when a user click the slice myobject become for example
let filter = {
gen: "1"
}
Take a look at this StackBlitz project.
In getData(), I simplified your filter to this one:
return data.filter(item => {
for (const property of Object.keys(filter)) {
if (item[property] !== filter[property]) {
return false;
}
}
return true;
});
and when a slice is clicked, I call genderPie() again, after updating the filter.
You might want to separate the data request from the filtering, so that the data is downloaded only once, not every time a filter is changed.
Function 1 Which returns JSON array.
function allPlans()
{
var all_plans = {
'Option1' : {
'free':{status:true,plantext:"5 Per Month"},
'premium':{status:true,plantext:"Unlimited"},
'vip':{status:true,plantext:"5 Per Month"}
},
'Option2' : {
'free':{status:true,plantext:"Unlimited"},
'premium':{status:true,plantext:"Unlimited"},
'vip':{status:true,plantext:"Unlimited"}
},
'Option3' : {
'free':{status:true,plantext:"Unlimited"},
'premium':{status:true,plantext:"Unlimited"},
'vip':{status:true,plantext:"Unlimited"}
},
'Option4':{
'free':{status:true,plantext:"-"},
'premium':{status:true,plantext:"Full Access"},
'vip':{status:true,plantext:"Full Access"}
},
'Option5' : {
'free':{status:true,plantext:"-"},
'premium':{status:true,plantext:"3 Per Month"},
'vip':{status:true,plantext:"3 Per Month"}
},
'Option6' : {
'free':{status:true,plantext:"-"},
'premium':{status:true,plantext:"-"},
'vip':{status:true,plantext:"1 Portfolio"}
},
'Option7' : {
'free':{status:true,plantext:"-"},
'premium':{status:true,plantext:"-"},
'vip':{status:true,plantext:"1 Per Month"}
},
}
return all_plans;
}
Another function "rendercolumn()" to return plans view.
function rendercolumn()
{
const options = allPlans();
var isrowclass = false;
var getrowclass = "";
const plansMap = Object.keys(options).reduce((acc, title) => {
if (props.planname == 'free')
{
var plans = options[title]["free"];
}
else if(props.planname == 'premium')
{
var plans = options[title]["premium"];
}
else if(props.planname == 'vip')
{
var plans = options[title]["vip"];
}
Object.keys(plans).forEach(plan =>
{
if (!acc[plan])
{
acc[plan] = [];
}
if(isrowclass == true)
{
isrowclass = false;
getrowclass = plan_item_gray;
}
else
{
isrowclass = true;
getrowclass = plan_item;
}
acc[plan].push({
title,
status: plans.status,
text: plans.plantext,
rowclass: getrowclass,
})
});
return acc;
}, {})
return (
<div>
{Object.keys(plansMap).map(plan => (
<Column key={plan} data={plansMap[plan]} />
))}
</div>
)
}
After that called component "Column"
const Column = ({data}) => (
<div>
{data.map(option => (
<div className={option.rowclass}>{option.text}</div>
))}
</div>
)
And at the last I have called "{rendercolumn()}" function to display the data on view.
Now in all above code I'm getting rows as expected, but it showing details twice.
I'm getting result like:
I want result like:
What changes needs to be done in above code?
I tried to create a simple todo app with Cyclejs/xstream. The app works fine. Only thing I not able to understand is after adding each todo the input should clear, which is not happening.
todo.js
import {
div, span, p, input, ul, li, button, body
}
from '#cycle/dom'
import xs from 'xstream'
import Utils from './utils'
export function Todo(sources) {
const sinks = {
DOM: view(model(intent(sources)))
}
return sinks
}
function intent(sources) {
return {
addTodo$: sources.DOM.select('input[type=text]').events('keydown').filter((ev) => {
return ev.which == 13 && ev.target.value.trim().length > 0;
}).map((ev) => {
return ev.target.value;
}),
deleteTodo$: sources.DOM.select('.delete').events('click').map((ev) => {
return Number(ev.target.getAttribute('data-id'));
}).filter((id) => {
return !isNaN(id);
}),
completeTodo$: sources.DOM.select('.complete').events('click').map((ev) => {
return Number(ev.target.getAttribute('data-id'));
}).filter((id) => {
return !isNaN(id);
})
};
}
function model(action$) {
let deleteTodo$ = action$.deleteTodo$.map((id) => {
return (holder) => {
let index = Utils.findIndex(holder.currentTodos, 'id', id);
if (index > -1) holder.currentTodos.splice(index, 1);
return {
currentTodos: holder.currentTodos,
value: ''
};
};
});
let completeTodo$ = action$.completeTodo$.map((id) => {
return (holder) => {
let index = Utils.findIndex(holder.currentTodos, 'id', id);
if (index > -1) holder.currentTodos[index].completed = !holder.currentTodos[index].completed;
return {
currentTodos: holder.currentTodos,
value: ''
};
};
});
let addTodo$ = action$.addTodo$.map((item) => {
return (holder) => {
let todo = {
value: item,
id: holder.currentTodos.length + 1,
completed: false
};
holder.currentTodos.push(todo);
return {
currentTodos: holder.currentTodos,
value: ''
};
};
});
return xs.merge(deleteTodo$, addTodo$, completeTodo$)
.fold((holder, modifier) => {
return modifier(holder);
}, {
currentTodos: [],
value: ''
});
}
function view(state$) {
return state$.map((state) => {
console.log(state);
return div({
attrs: {
class: 'todo'
}
}, [
input({
props: {
type: 'text',
value: state.value
}
}),
ul({
attrs: {
class: 'text'
}
}, state.currentTodos.map((todo) => {
return li({
attrs: {
class: `${todo.completed ? 'completed' : 'open'}`
}
}, [
span(todo.value),
button({
attrs: {
class: 'delete',
'data-id': todo.id
}
}, 'XXXXX'),
button({
attrs: {
class: 'complete',
'data-id': todo.id
}
}, 'CCCCC')
]);
}))
]);
});
}
utils.js
var Utils = {
filter: function(array, fn) {
var results = [];
var item;
for (var i = 0, len = array.length; i < len; i++) {
item = array[i];
if (fn(item)) results.push(item);
}
return results;
},
findItem: function(array, fn) {
for (var i = 0, len = array.length; i < len; i++) {
var item = array[i];
if (fn(item)) return item;
}
return null;
},
findIndex: function(array, prop, value) {
var pointerId = -1;
var index = -1;
var top = array.length;
var bottom = 0;
for (var i = array.length - 1; i >= 0; i--) {
index = bottom + (top - bottom >> 1);
pointerId = array[index][prop];
if (pointerId === value) {
return index;
} else if (pointerId < value) {
bottom = index;
} else if (pointerId > value) {
top = index;
}
}
return -1;
}
};
export default Utils;
You need to put hook inside input element. It will work as expected. If you want you can send another default value (in this case it is empty string).
input({
props: {
type: 'text'
},
hook: {
update: (o, n) => n.elm.value = ''
}
}),
#cycle/dom driver should be > 11.0.0 which works with Snabbdom. But if you use earlier version you need:
var Hook = function(){
this.arguments=arguments;
}
Hook.prototype.hook = function(node) {
node.value=this.arguments[0];
}
input({ attributes: {type: 'text'},
'my-hook':new Hook('')
})