案例:html/html5 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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<body>
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<form action="/example/demo_form.aspx" method="get">
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  First name: <input type="text" name="fname" /><br />
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  Last name: <input type="text" name="lname" /><br />
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  <button type="submit" value="Submit">Submit</button>
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  <button type="reset" value="Reset">Reset</button>
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</form>
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</body>
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</html>