Примеры для jQuery .empty()

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Removes all child nodes (including text nodes) from all paragraphs

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>empty demo</title>
  <style>
  p {
    background: yellow;
  }
  </style>
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
 
<p>
  Hello, <span>Person</span> <em>and person</em>.
</p>
 
<button>Call empty() on above paragraph</button>
 
<script>
$( "button" ).click(function() {
  $( "p" ).empty();
});
</script>
 
</body>
</html>

Демонстрация: