1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> 5 <title>Document</title> 6 <style> 7 body{ 8 margin: 200px; 9 } 10 div{ 11 width: 200px; 12 height: 200px; 13 background: #ccc; 14 } 15 </style> 16 </head> 17 <body> 18 <div> 19 <span>go</span> 20 21 </div> 22 <a href="http://baidu.com" target="blank">baidu</a> 23 <script> 24 var oDiv = document.getElementsByTagName("div")[0], 25 oSpan = document.getElementsByTagName("span")[0], 26 aTag = document.getElementsByTagName("a")[0]; 27 oDiv.onclick = function(){ 28 alert("div"); 29 } 30 oSpan.onclick = function(evt){ 31 alert("span"); 32 stopBubble(evt); 33 } 34 35 aTag.onclick = function(evt){ 36 alert("a link"); 37 stopBubble(evt); 38 } 39 //阻止事件的传播和默认行为 40 function stopBubble(evt){ 41 var evt = evt || event; 42 if(evt.stopPropagation){ 43 //IE上阻止事件的传播 44 evt.stopPropagation(); 45 //阻止默认行为 46 // evt.preventDefault(); 47 }else{ 48 //w3c标准的阻止事件的传播 49 evt.cancelBubble = true; 50 //w3c标准的阻止默认行为 51 evt.returnValue = false; 52 } 53 } 54 </script> 55 </body> 56 </html>
原文：http://www.cnblogs.com/conderpath/p/5894352.html