案例:javascript案例     状态:可编辑再运行    进入竖版
 运行结果 
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<html>
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<head>
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<script type="text/javascript">
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function removeBorder()
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  {
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  document.getElementById("frame1").frameBorder="0";
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  }
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function restoreBorder()
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  {
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  document.getElementById("frame1").frameBorder="1";
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  }
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</script>
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</head>
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<body>
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<iframe src="/example/hdom/frame_a.html" id="frame1"></iframe>
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<br /><br />
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<input type="button" onclick="removeBorder()" value="Remove border" />
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<input type="button" onclick="restoreBorder()" value="Restore border" />
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</body>
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</html>
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