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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<!DOCTYPE html>
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<html>
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<head>
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<script>
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function newDoc()
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 {
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 window.location.assign("//www.w3xue.com")
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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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<input type="button" value="加载新文档" onclick="newDoc()">
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​
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</body>
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</html>
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​