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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​
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<head>
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<script type="text/javascript">
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function upperCase()
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{
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var x=document.getElementById("fname").value
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document.getElementById("fname").value=x.toUpperCase()
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}
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</script>
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</head>
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​
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<body>
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​
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Enter your name: <input type="text" id="fname" onblur="upperCase()"><br />
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Enter your age: <input type="text" id="age" onblur="alert(this.id)">
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​
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</body>
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</html>
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​