常用js

1. 冒泡阻止

function stopBubble(e){
    e = e || window.event;  
    if(e.stopPropagation){
        e.stopPropagation();  //W3C阻止冒泡方法  
    }else {  
        e.cancelBubble = true; //IE阻止冒泡方法  
    }  
}
 

2.