案例：jQuery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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<head>
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<script type="text/javascript" src="/js/jquery.js"></script>
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<script type="text/javascript">
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$(document).ready(function(){
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  $(".btn1").click(function(){
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    $(":checkbox").hide();
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  });
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});
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</script>
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</head>
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<body>
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<form action="">
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I have a bike:
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<input type="checkbox" name="vehicle" value="Bike" />
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<br />
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I have a car:
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<input type="checkbox" name="vehicle" value="Car" />
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<br />
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I have an airplane:
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<input type="checkbox" name="vehicle" value="Airplane" />
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</form>
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<button class="btn1">Hide Checkboxes</button>
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</body>
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</html>
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​