(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/);     if(isAndroid){
          (function(){
              function android_inter(){
                  let t_url = "xxxxxx";                 document.getElementById("事件监听的DOM节点").onclick = function () {
                      android.onNavigateByScheme(t_url);                 }             }             android_inter();         })();     }else if(isiOS){
          /**          *  UIWebView与JS之间的桥接          */         function setupWebViewJavascriptBridge(callback) {
              if (window.WebViewJavascriptBridge) { return callback(WebViewJavascriptBridge); }             if (window.WVJBCallbacks) { return window.WVJBCallbacks.push(callback); }             window.WVJBCallbacks = [callback];             var WVJBIframe = document.createElement('iframe');             WVJBIframe.style.display = 'none';             WVJBIframe.src = 'https://__bridge_loaded__';             document.documentElement.appendChild(WVJBIframe);             setTimeout(function() { document.documentElement.removeChild(WVJBIframe) }, 0)         }         let t_url = "xxxxxx";         document.getElementById("事件监听的DOM节点").onclick = function () {
              setupWebViewJavascriptBridge(function(bridge) {
                  bridge.callHandler("客户端定义好的函数名",t_url, function (responseData) {
                  });             });         }     } })();