jquery手机端弹出层

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>jQuery 弹出层示例</title>
<style>
  .modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
  }
  .modal-content {
    background-color: #fefefe;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
  }
  .close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
  }
  .close:hover,
  .close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
  }
</style>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>

<button id="myBtn">打开弹出层</button>

<div id="myModal" class="modal">
  <div class="modal-content">
    <span class="close">&times;</span>
    <p>这是一个弹出层！</p>
  </div>
</div>

<script>
  $(document).ready(function(){
    var modal = $('#myModal');
    var btn = $('#myBtn');
    var span = $('.close');

    btn.click(function(){
      modal.css('display', 'block');
    });

    span.click(function(){
      modal.css('display', 'none');
    });

    $(window).click(function(event){
      if (event.target == modal[0]) {
        modal.css('display', 'none');
      }
    });
  });
</script>

</body>
</html>