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 showTimestamp(event)
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  {
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  var minutes = 1000*60
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  x=event.timeStamp;
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  alert(x/minutes)
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  }
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</script>
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</head>
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​
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<body onmousedown="showTimestamp(event)">
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​
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<p>Click in the document. An alert box will alert the timestamp.</p>
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​
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</body>
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</html>
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​