jQuery-iframe加载完成后触发的事件监听

 $(document).ready(function(e) {
        var iframe = document.getElementById("zhanqi-live");
        if (iframe.attachEvent) {
            //todo something
        } else {
            iframe.onload = function () {
                //todo something
            }
        }
    });

获取iframe变量 ：iframe.contentWindow. variate