h5唤起APP

function tryOpenApp() {
       event.stopPropagation();
       statisimage("49.145.1295",3);
       var androidurl = 'jiayuan://com.jiayuan?from_scheme=true' ;
       var iosurl='jiayuan://com.jiayuan?jsonValue=1';
       if (uais('ios')) {
           surl=iosurl;
       }
       else{
           surl=androidurl;
       }

       if (uais('ios')) {
           var loadDateTime = new Date();
           window.location = surl;//schema链接或者universal link

           window.setTimeout(function() { //如果没有安装app,便会执行setTimeout跳转下载页

               var timeOutDateTime = new Date();

               if (timeOutDateTime - loadDateTime < 5000) {
                   window.location = "<{$smarty.const.TOUCHCFG_BASEURL}>/?MMIPN=download&event_id="+event_id; //ios下载地址

               } else {
                   window.close();

               }

           }, 500);
       }
       else {
           // location.href = surl;
           // setTimeout(function() {
           //     location.href = "https://d.jiayuan.com";
           // }, 2000);
           //创建iframe
           var ifr=document.createElement("iframe");
           //iframe设置为app的协议打开方式地址
           ifr.src=surl;//安卓协议启动地址
           ifr.style.display="none";//隐藏
           var t=Date.now();//取当前时间戳
           //延迟执行iframe 实现访问app协议打开app
           setTimeout(function(){
               document.body.appendChild(ifr);
           },96);
           //延迟执行 如果1s没响应，就表示你手机中没有该app。就可以去下载了
           setTimeout(function(){
               if(Date.now() - t < 2000){
                   // document.body.appendChild(ifr);
                   location.href="<{$smarty.const.TOUCHCFG_BASEURL}>/?MMIPN=download";//安卓下载地址
               }
           },1001);
       }
   }
   function uais(name) {
       var ua = navigator.userAgent.toLowerCase();
       var is = false;
       switch (name) {
           case 'weixin':
               is = ua.match(/(micromessenger|qq|txmicroblog);?/i)
               break;
           case 'ios':
               is = ua.match(/(iphone|ipod|ipad);?/i)
               break;
           case 'browser':
               is = ua.match(/(applewebkit);?/i)
               break;
           default:
               is = ua.indexOf(name) > -1;
       }
       return is;
   }
   function closeLoadApp(){
       event.stopPropagation();
       $('#load_app').removeClass('app_show');
       JY_PublicFn.requestData("<{getPageUrl mod='ajax' act='newindex' func='closeLoadBtn'}>", {'page':'index'}).then(res=>{

       })
       return;
   }