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How do I select the next item in an array when a user clicks on a button?

I am making quiz using 4 buttons to answer the questions (I have 6 questions in total).

How do I get the next set of questions from my array? It looks like this:

var questions = [{
       question: "the question!".
       answer1: "choice1",
       answer2: "choice2",
       answer3: "choice3",
       answer4: "choice4",
       correct: "choice3",

}}
about 4 years ago · Juan Pablo Isaza
1 answers
Answer question

0

Just track the current index in the array, and when they click, increment the index. And then I'd just have a render method which takes the index as a parameter. Something like:

const questions = [{
       question: "the question!",
       answer1: "choice1",
       answer2: "choice2",
       answer3: "choice3",
       answer4: "choice4",
       correct: "choice3"

}, {
       question: "the next question!",
       answer1: "A",
       answer2: "B",
       answer3: "C",
       answer4: "D",
       correct: "C"
}];

var currentQuestionIndex = 0;

const c = document.getElementById('content');

const render = (idx) => {
    const q = questions[idx];
    c.innerHTML = `<strong>${q.question}</strong>
        <p><label><input name="q" type="radio"/>${q.answer1}</label>
        <p><label><input name="q" type="radio"/>${q.answer2}</label>
        <p><label><input name="q" type="radio"/>${q.answer3}</label>
        <p><label><input name="q" type="radio"/>${q.answer4}</label>
    `;
}

render(currentQuestionIndex);

document.getElementById('btn').addEventListener('click', () => {
    currentQuestionIndex = (currentQuestionIndex + 1) % questions.length;
    render(currentQuestionIndex);
});
<div id="content"></div>

<button id="btn">Next</button>

about 4 years ago · Juan Pablo Isaza Report
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