调试易

var a=function(){
                var self=this;
                this.b=function(){
                    alert(this==self)//弹出true
                    this.c()//出错  为什么？？？？？  因为this.c == undefined
                }
                this.b(); <---- 这里在this.c=func...之前执行的，此时this.c == undefined
                this.c=function(){
                    alert('cccc')
                }
            }
            new a()
把this.b() 放到 this.c=func... 的后面就可以了

下面的代码怎么错了？？
var a=function(){
var self=this;
this.b=function(){
alert(this==self)//弹出true
this.loadingEditorCheck = function(){
if (self.loadingComplete == true){
clearInterval(this.loadingOk);
self.c();
}
else {
this.loadingOk = setInterval(this.loadingEditorCheck, 1000);
}
}
}
this.b();
this.c=function(){
alert('cccc')
}
setTimeout("alert(this.loadingComplete=true)",3000)
}
new a()

this.loadingEditorCheck 没调用他的地方

var a=function(){
                var self=this;
                this.b=function(){
                    alert(this==self)//弹出true
                    this.loadingEditorCheck = function(){ //这个this是self
                        if (self.loadingComplete == true){
                            clearInterval(this.loadingOk);
                            self.c();
                        }
                        else {
                            this.loadingOk = setInterval(this.loadingEditorCheck, 1000); //setInterval里的this应该是window的
                        }
                    }
                }
                this.b();
                this.c=function(){
                    alert('cccc')
                }
                setTimeout("alert(this.loadingComplete=true)",3000)
            }
            new a()

setTimeout("alert(this.loadingComplete=true)",3000)   //<---这里的this是window对象//把 this 改成 a 就可以了

this来this去，不用那么多吧？函数定义，执行，都没作为类而实例化一系列方法，有必要那么多this?
<script>
var a=function(){
var self=this;
(function(){
//alert(this==self)//弹出true
var loadingOk = setInterval(function(){
if (self.loadingComplete == true){
clearInterval(loadingOk);
loadingOk = null;
self.c();
}
}, 1000);
})()
this.c=function(){
alert('cccc')
}
setTimeout(function(){self.loadingComplete=true},3000)
}
new a()</script>