案例：javascript案例     状态：可编辑再运行    进入竖版
 运行结果　
​x
 
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<!DOCTYPE html>
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<html>
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<head>
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<script>
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function changeLink()
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{
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document.getElementById('myAnchor').innerHTML="W3xue";
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document.getElementById('myAnchor').href="//www.w3xue.com";
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document.getElementById('myAnchor').target="_blank";
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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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<a id="myAnchor" href="http://www.baidu.com">百度</a>
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<input type="button" onclick="changeLink()" value="更改链接">
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​
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</body>
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</html>