在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
  $("div").on("click","p",function(){
    $(this).slideToggle();
  });
  $("button").click(function(){
    $("<p>This is a new paragraph.</p>").insertAfter("button");
  });
});
</script>
</head>
<body>

<div style="background-color:yellow">
<p>This is a paragraph.</p>
<p>Click any p element to make it disappear. Including this one.</p>
<button>Insert a new p element after this button</button>
</div>

</body>
</html>
源代码

动行结果
