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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> <script src="http://cdn.static.w3big.com/libs/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("div").on("click","button",function(event){ $(event.delegateTarget).css("background-color", "pink"); }); }); </script> </head> <body> <div style="background-color:yellow"> <p>点击按钮修改这个 div 元素的背景颜色。</p> <button>点我!</button> </div> <div style="background-color:yellow"> <p>点击按钮修改这个 div 元素的背景颜色。</p> <button>点我!</button> </div> </body> </html>