常用的js阻止冒泡的方法

//阻止浏览器冒泡 
function stopBubble(e) {
     if ( e && e.stopPropagation ){
         //W3C标准
         e.stopPropagation();
     }
     else{
         //IE 6 7 8 Only 
         window.event.cancelBubble = true;
     }
 }