<video id="videoId" class="videoControl" src="" controls="controls" autoplay="autoplay">    </video>   

var url = location.search; //获取url中"?"符后的字串 ('?modFlag=business&role=1')

    var theRequest = new Object();
    if (url.indexOf("?") != -1) {
        var str = url.substr(1); //substr()方法返回从参数值开始到结束的字符串；
        var strs = str.split("&");
        for (var i = 0; i < strs.length; i++) {
            theRequest[strs[i].split("=")[0]] = (strs[i].split("=")[1]);
        }
        console.log(theRequest.currentSrc); //此时的theRequest就是我们需要的参数；
        $('#videoId').attr('src', theRequest.currentSrc);
    }