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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<body>
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​
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<script>
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person={firstname:"Bill",lastname:"gates",age:56,eyecolor:"blue"}
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​
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document.write(person.firstname + " is " + person.age + " years old.");
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</script>
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​
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</body>
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</html>
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​