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 setColor()
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{
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document.getElementById("p1").style.color="#ff0000";
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document.getElementById("p2").style.color="magenta";
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}
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</script>
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</head>
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<body>
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​
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<p id="p1">This is an example paragraph.</p>
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<p id="p2">This is also an example paragraph.</p>
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​
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<input type="button" onclick="setColor()" value="Change color of text" />
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​
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</body>
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</html>
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​