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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>bubble event</title> <style type="text/css"> body{margin:0;} #one{ width:500px; height:300px; background:rgb(255,0,0); } #two{ width:400px; height:260px; background:rgb(255,50,50); } #three{ width:300px; height:240px; background:rgb(255,100,100); } #four{ width:200px; height:200px; background:rgb(255,150,150); } </style> </head> <body> <div id=‘one‘> <div id=‘two‘> <div id=‘three‘> <div id=‘four‘> </div> </div> </div> </div> <script> var one = document.getElementById(‘one‘); var two = document.getElementById(‘two‘); var three = document.getElementById(‘three‘); var four = document.getElementById(‘four‘); var useCapture = true; //false为冒泡获取【目标元素先触发】 true为捕获获取【父级元素先触发】 one.addEventListener(‘click‘, function() { console.log(‘one‘); }, useCapture); two.addEventListener(‘click‘, function() { console.log(‘two‘); }, useCapture); three.addEventListener(‘click‘, function() { console.log(‘three‘); }, useCapture); four.addEventListener(‘click‘, function() { console.log(‘four‘); }, useCapture); /* false 冒泡 点击four div 输出结果：four three two one true 捕获 点击four div 输出结果： one two three four */ </script> </body> </html>
addEventListener第三个参数useCapture ，true时为捕获，false时为冒泡
冒泡从目标对象开始，向父级元素至window传递；捕获从window底层逐级至目标对象传递！
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原文地址：http://www.cnblogs.com/msdn1433/p/5666844.html
