JS判断安卓端或者苹果端并下载

        $(".detail-download").click(function() {
            var u = navigator.userAgent;
            var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android终端
            var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端
          //  alert('是否是Android：' + isAndroid);
            if(isAndroid == true){
                    window.location.href = "openwjtr://com.tyrbl.wjtr"; /***打开app的协议，有安卓同事提供***/
                    window.setTimeout(function(){
                        //window.location.href = "http://wcy.fgtrj.com/jianjie.apk"; /***打开app的协议，有安卓同事提供***/
                        System.Shell.execute('http://wcy.fgtrj.com/jianjie.apk');
                    },200);

            }
            //alert('是否是iOS：' + isiOS);
            if(isiOS == true){
                var ifr = document.createElement("iframe");
                ifr.src = "openwjtr://com.tyrbl.wjtr"; /***打开app的协议，有ios同事提供***/
                ifr.style.display = "none";
                document.body.appendChild(ifr);
                window.setTimeout(function(){
                    document.body.removeChild(ifr);
                    window.location.href = "https://itunes.apple.com/us/app/%E8%B7%A8%E5%A2%83%E4%BA%91/id1287819362?mt=8"; /***下载app的地址***/
                },200)
            }
        });