Javascript IE8兼容模式|类型不匹配|事件

DOX.js

初始化：

function DOX_(win, doc){
    var that = this;
    this.events = {};
    this.onload = function(func){
        var prev_onload = win.onload;
        this.addEvent(win, doc, 'load',
            function(win_, event_){
                if(prev_onload)
                    prev_onload();
                func(win_);
                that.removeEvent(win_,event_);
            }
        );
    }
    this.addEvent = function(win, doc, event_, func){
        if(win.addEventListener || doc.addEventListener){
            var compat_event = win.addEventListener || doc.addEventListener;
            if(event_ in this.events){
                compat_event(event_, function(){
                    func(win, event_);
                    this.events[event_](win, event_);
                }, true);
            }else{
                compat_event(event_, function(){
                    func(win, event_);
                }, true);
            }
            this.events[event_] = func;
        }else if(win.attachEvent || doc.attachEvent){
            var compat_event = win.attachEvent || doc.attachEvent;
            var ie_event = 'on' + event_;
            if(ie_event in this.events){
                compat_event(ie_event, function(){
                    func(win, ie_event);
                    this.events[ie_event](win, ie_event);
                });
            }else{
                compat_event(ie_event, function(){
                    func(win, ie_event);
                });
            }
            this.events[ie_event] = func;
        }
    }
    this.removeEvent = function(win, doc, event_){
        if(win.removeEventListener || doc.removeEventListener){
            var compat_event = win.removeEventListener || doc.removeEventListener;
            compat_event(event_, this.events[event_], true);
            this.events[event_] = null;
            delete this.events[event_];
        }else if(win.detachEvent || doc.detachEvent){
            var compat_event = win.detachEvent || doc.detachEvent;
            var ie_event = 'on' + event_;
            compat_event(ie_event, this.events[ie_event]);//type mismatch error
            this.events[event_] = null;
            delete this.events[ie_event];
        }
    }
}

我正在为以下内容创建跨浏览器兼容性框架：

• IE7+
• Firefox38+
• 铬43+
• 网景7+
• 歌剧30+
• Safari 5.1.7+

IE8兼容模式（IE7）错误：

网页错误详细信息

用户代理：Mozilla/4.0（兼容；MSIE8.0；WindowsNT6.1；WOW64； Trident/4.0；SLCC2；.NET CLR 2.0.50727；.NET CLR 3.5.30729；.NET CLR 3.0.30729）时间戳：星期三，2015年8月12日16:41:11 UTC

---

根据IE7文档，attachEvent在一个或多个参数未定义时引发异常“类型不匹配”

this.events[ie\u event]

返回未定义的

---

-Nallar的积分

Try

console.log（typeof（compat_事件））在出现不匹配错误的行之前。它记录了什么？从一些测试中，IE给出了当
attachEvent
的任何参数
未定义时的“类型不匹配”错误。因此，由于某些原因，
this.events[ie\u event]
必须是未定义的。谢谢，问题是ie\u event返回未定义。谢谢
var DOX = new DOX_(window, document);
DOX.onload(function(){
    alert("hello world");
});

Message: Type mismatch.

Line: 68
Char: 4
Code: 0
URI: http://nportal.rrh.com/JS/DOX.js