处理iframe内部点击没有反应、跨域点击被拦截

var IframeOnClick = {
    resolution: 500,
    iframes: [],
    interval: null,
    Iframe: function() {
        this.element = arguments[0];
        this.cb = arguments[1];
        this.hasTracked = false;
    },
    track: function(element, cb){
        this.iframes.push(new this.Iframe(element, cb));
        if (!this.interval){
            var _this = this;
            this.interval = setInterval(function() { _this.checkClick(); }, this.resolution);
        };
    },
    checkClick: function() {
        if(document.activeElement){
            var activeElement = document.activeElement;
            for (var i in this.iframes){
                if (activeElement === this.iframes[i].element){
                    if(this.iframes[i].hasTracked == false){
                        this.iframes[i].hasTracked = true;
                        this.iframes[i].cb();
                        activeElement = this.activeEl;
                    };
                } else {
                    this.iframes[i].hasTracked = false;
                };
            };
        };
    }
};
//引用
IframeOnClick.track(document.getElementById("logon_iframe"),function(){
    
});