javascript中使用Observer模式使一个元素的一个事件中加入多个事件处理

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test1.js
function Router(el, type) {
    this.el = el;
    this.array = new Array();
    el.Router = this;
    el[type] = this.bbb;
   
}
Router.prototype.addListener=function(lsnr){
  this.array.push(lsnr);
}

Router.prototype.bbb = function(e) {
    var e = e || window.event;
    var r = this.Router;
    r.nn(e);
}
Router.prototype.nn = function(e) {
    var ls = this.array;
    for(var i=0;i        var lsnr=ls[i];
        lsnr.call(this,e);
      }

}