自己封装的兼容事件处理eventHandler.js

(function(obj){
    //绑定事件
    obj.prototype.addEvent = function(elem,type,fn,boolean){
        if(elem.addEventListener){
            elem.addEventListener(type,fn,boolean);
        }else if(elem.attachEvent){
            elem.addEventListener("on"+type,fn);
        }else{
            console.error("您的浏览器版本太低");
            return false;
        }
        return this;
    }

    //移出事件
    obj.prototype.removeEvent = function(elem,type,fn){
        if(elem.removeEventListener){
            elem.removeEventListener(type,fn);
        }else if(elem.detachEvent){
            elem.detachEvent("on"+type,fn);
        }else{
            console.error("您的浏览器版本太低");
            return false;
        }
        return this;
    }

    //获取事件
    obj.prototype.getEvent = function(event){
        return event ? event : window.event;
    }

    //获取对象
    obj.prototype.getTarget = function (event) {
        event = this.getEvent();
        return event.target || event.srcElement;
    }

    //阻止默认行为
    obj.prototype.preventDefault = function (event) {
        event = this.getEvent();
        if (event.preventDefault) {
            event.preventDefault();
        } else {
            event.returnValue = false;
        }
    }

    //阻止事件冒泡
    obj.prototype.stopPropagation = function (event) {
        event = this.getEvent();
        if (event.stopPropagation) {
            event.stopPropagation();
        } else {
            event.cancelBubble = true;
        }
    }

})(Object);