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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  <button id='btn'>
    <span>新增列表项</span>
  </button>
  <ul id='list'></ul>
  当前点击的列表项:<span id="txt"></span>
</body>
</html>
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anonymouspro
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