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script in Javascript or Jquery for click event

I started it in javascript but if someone have better in Jquery i'll take it. I explain the context: i have a few questions and each ones has answers, i would like to click on a question and then the answers appear. I already did this:

document.querySelector(".question").onclick = function() {
if (window.getComputedStyle(document.querySelector('.item_group_resultat')).display=='none'){
document.querySelector(".item_group_resultat").style.display="block";
} 
else {
document.querySelector(".item_group_resultat").style.display="none";
}
}

the problem is that the only one works but not others.

here is the html code

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
 <div class="content">
        <h1 class="titre"></h1>
        <div class="navigation" id="style-7">
            <ul class="item_group">
                <li class="item titre"></li>
                <li class="item">
                    <a class="question" href="#"></a>
                </li>
                <li class="item">
                    <a class="question" href="#"></a>
                </li>
                <li class="item">
                    <a class="question" href="#"></a>
                </li>
                <li class="item">
                    <a class="question" href="#"></a>
                </li>
                <li class="item">
                    <a class="question" href="#"></a>
                </li>
            </ul>
        </div>
        <div class="resultat">
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat"></li>
              <li class="item content_resultat"></li>
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat"></li>
                <li class="item content_resultat"></li>
            </ul>
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat"></li>
                <li class="item content_resultat"></li>
            </ul>
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat"></li>
                <li class="item content_resultat"></li>
            </ul>
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat"></li>
                <li class="item content_resultat"></li>

        </div>
    </div>
</body>
</html>

Here's the update vanilla JS solution:

<div class="content">
        <h1 class="titre"></h1>
        <div class="navigation" id="style-7">
            <ul class="item_group">
                <li class="item titre">Q</li>
                <li class="item">
                    <a class="question" href="#">1</a>
                </li>
                <li class="item">
                    <a class="question" href="#">2</a>
                </li>
                <li class="item">
                    <a class="question" href="#">3</a>
                </li>
                <li class="item">
                    <a class="question" href="#">4</a>
                </li>
                <li class="item">
                    <a class="question" href="#">5</a>
                </li>
            </ul>
        </div>
        <div class="resultat">
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat">1</li>
              <li class="item content_resultat">1</li>
            </ul>
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat">2</li>
                <li class="item content_resultat">2</li>
            </ul>
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat">3</li>
                <li class="item content_resultat">3</li>
            </ul>
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat">4</li>
                <li class="item content_resultat">4</li>
            </ul>
            <ul class="item_group item_group_resultat">
                <li class="item titre_resultat">5</li>
                <li class="item content_resultat">5</li>

        </div>
    </div>
div {
  border: 1px solid black;
  padding: 20px;
}
.question {
  border: 1px solid black;
  padding: 0 40px;
}
.item_group_resultat {
  display: none;
}
.active {
  display: block;
}

document.querySelector(".navigation").addEventListener("click", function(e){

   let currentIdx;
   Array.from(this.querySelectorAll(".question")).some( (q,idx) => ( q === e.target ) ? ( currentIdx = idx, true ) : false );
   let prev = document.querySelector(".item_group_resultat.active");
   document.querySelectorAll(".item_group_resultat")[currentIdx].classList.toggle("active");
   prev && prev.classList.remove("active");

});

Codepen

Using jQuery you can do this:

$('.question').click(function() {
   var index = $(this).parent().index();
   $('.item_group_resultat').eq(index).toggle().siblings().hide();
});
  • $(this).parent().index() will get the index of clicked .question
  • and the toggle() will toggle between hide and show for the item_group_resultat present in the same index but inside different div.

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