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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<!DOCTYPE html>
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<html>
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<head>
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<script src="/js/jquery-1.11.1.min.js"></script>
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<script>
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$(document).ready(function(){
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  $("button").click(function(){
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    $("p").remove(".italic");
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  });
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});
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</script>
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</head>
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​
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<body>
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​
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<p>This is a paragraph in the div.</p>
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<p class="italic"><i>This is another paragraph in the div.</i></p>
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<p class="italic"><i>This is another paragraph in the div.</i></p>
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<button>删除 class="italic" 的所有 p 元素</button>
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​
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</body>
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</html>
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​