javascript-函数及兼容

1.事件绑定，删除，传播，默认方式，获取类型的兼容

var eventList = {
         //添加事件兼容
         addEvent:function  (event,type,backevent) {
             if (event.addEventListener) {
                 event.addEventListener(type,backevent,false);//false为冒泡true为捕获
             } else if(event.attachEvent){
                 event.attachEvent('on'+type,backevent);
             }else{
                 event['on'+type] = backevent;
             };
         },
         //删除事件兼容
         removeEvent:function  (event,type,backevent) {
             if (event.removeEventListener) {
                 event.removeEventListener(type,backevent,null);
             } else if(event.detachEvent){
                 event.detachEvent('on'+type,backevent);
             }else{
                 event['on'+type]=null;
             };
         },
         //阻止冒泡向上传播
         stopPro:function  (event) {
             if (event.stopPropagation) {
                 event.stopPropagation();
             } else{
                 event.cancelBubble = true;
             };
         },
         //阻止默认事件
         stopDefault:function  (event) {
             if (event.preventDefault) {
                 event.preventDefault();
             } else{
                 event.returnValue = false;
             };
         },
         //获取事件类型
         getType:function  (event) {
             return event.type;
         },
         //获取事件
         getEvent:function  (event) {
             return event?event:window.event;
         },
         //获取事件目标
         getElement:function  (event) {
             return event.target||event.srcElement;
         }
     }

2.判断css属性是否存在

//是否支持css的某个属性
function isSuportCss(property){
    var body = $("body")[0];
    for(var i=0; i<property.length;i++){
        if(property[i] in body.style){
            return true;
        }
    }
    return false;
}