iframe里面一般都会使用别人的URL，没有很多交互，使用document.activeElement可以对iframe进行事件监听。
使用下面的类进行测试：
var IframeOnClick = { resolution: 200, 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) { // user is in this Iframe this.iframes[i].cb.apply(window, []); } } } } }; var index = layer.open({ type: 2, content: 'http://layim.layui.com', area: ['320px', '195px'], maxmin: true, success:function (layero,index) { var iframeWin = window[layero.find('iframe')[0]['name']]; IframeOnClick.track(layero.find('iframe')[0], function() { console.log("testtttt") }); } }); layer.full(index);
