实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
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<!DOCTYPE html>
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<html>
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<head>
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<script src="https://libs.baidu.com/jquery/1.10.2/jquery.min.js">
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</script>
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<script>
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$(document).ready(function(){
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  $("body").on("click","p",function(){
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    $(this).css("background-color","pink");
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  });
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  $("#btn1").click(function(){
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    $("body").off("click","p");
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  });
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  $("#btn2").click(function(){
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    $("body").undelegate("p","click");
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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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​
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<h4 style="color:green;">This example demonstrates how to achieve the same effect using off() and undelegate().</h4>
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​
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<p>Click this paragraph to change its background color.</p>
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<p>Click the button below and then click on this paragraph (the click event is removed).</p>
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​
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<button id="btn1">Remove the click event with off()</button>
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​
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<button id="btn2">Remove the click event with undelegate()</button>
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​
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</body>
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</html>