JavaScript事件冒泡机制详解与实例演示

代码实现细节

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>事件冒泡</title>
</head>
<body onclick="alert('body click');">
  <table onclick="alert('table click');">
    <tr onclick="alert('tr click');">
      <td onclick="alert('td click');">
        <input type="button" value="单击我" 
        onclick="alert('button click');" />
      </td>
    </tr>
  </table>
</body>
</html>