无法触发 jquery 中的 onclick 事件

Question

I can't toggle a div's class on clicking it in jquery

Expected Behavior: I want to add the close class to the hamburger menu so that it becomes a cross on clicking and want to display an overlay for mobile screens, but currently I just want to figure out how to trigger this onclick event.

Here's the code I am using to do so:

$("#mobile-menu").click(function() {
  $(".icon").toggleClass("close");
  var x = document.getElementsByClassName("overlay")[0];
  if ($(".icon").hasClass("close")) {
    x.style.display = "block";
    $("body").addClass("modal-open");
  } else {
    x.style.display = "none";
    $("body").removeClass("modal-open");
  }
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="mobile-menu">
  <div class="icon">
    <span class="line top"></span>
    <span class="line middle"></span>
    <span class="line bottom"></span>
  </div>
</div>

.line {
    position: absolute;
    height: 4px;
    width: 100%;
    background-color: black;
    border-radius: 30%;
    transition: cubic-bezier(0.26, 0.1, 0.27, 1.55) 0.35s;
  }
  .icon.close .top {
    transform: rotate(45deg);
    top: 48%;
  }
  .icon.close .middle,
  .icon.close .bottom {
    transform: rotate(-45deg);
    top: 48%;
  }

Answer 1

It looks like your element is not getting binded to the click function. You need to use document.ready to check the readiness and bind event.

Below is the working code snippet:

$(document).ready(function(){

  $("#mobile-menu").click(function() {
    $(".icon").toggleClass("close");
    var x = document.getElementsByClassName("overlay")[0];
    if ($(".icon").hasClass("close")) {
       x.style.display = "block";
       $("body").addClass("modal-open");
     } else {
       x.style.display = "none";
       $("body").removeClass("modal-open");
     }
  });
});