案例：html案例     状态：可编辑再运行    进入竖版
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<!DOCTYPE html>
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<html>
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<body>
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​
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<p>
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Depending on browser support:<br>
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A date picker can pop-up when you enter the input field.
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</p>
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​
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<form action="/example/html/form_action.aspx">
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  Birthday (month and year):
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  <input type="month" name="bdaymonth">
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  <input type="submit">
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</form>
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​
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<p><b>Note:</b>
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type="month" is not supported in Internet Explorer.
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</p>
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​
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</body>
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</html>