安卓：

 

window.AndroidWebView.方法名(参数);

window.AndroidWebView.productDetail(1989);

ios:

function isbrowser() {
         // 浏览器判断
         return window.browser = {
             versions: function () {
                 var u = navigator.userAgent,
                         app = navigator.appVersion;
                 return { //移动终端浏览器版本信息
                     trident: u.indexOf('Trident') > -1, //IE内核
                     presto: u.indexOf('Presto') > -1, //opera内核
                     webKit: u.indexOf('AppleWebKit') > -1, //苹果、谷歌内核
                     gecko: u.indexOf('Gecko') > -1 && u.indexOf('KHTML') == -1, //火狐内核
                     mobile: !!u.match(/AppleWebKit.*Mobile.*/), //是否为移动终端
                     ios: !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/), //ios终端
                     android: u.indexOf('Android') > -1 || u.indexOf('Linux') > -1, //android终端或uc浏览器
                     iPhone: u.indexOf('iPhone') > -1, //是否为iPhone或者QQHD浏览器
                     iPad: u.indexOf('iPad') > -1, //是否iPad
                     webApp: u.indexOf('Safari') == -1 //是否web应该程序，没有头部与底部
                 };
             }(),
             language: (navigator.browserLanguage || navigator.language).toLowerCase()

         };
     }

var productDetail;

  function InitWebViewJavascriptBridge(callback) {
           var ua = window.navigator.userAgent.toLowerCase();
           if (window.AndroidWebView || !isbrowser().versions.ios || ua.match(/MicroMessenger/i) == 'micromessenger') {
               return;
           }

           function _callback(bridge) {
               window.WebViewJavascriptBridge = bridge;
               if (callback) callback(bridge);
           }

           if (window.WebViewJavascriptBridge) {
               _callback(WebViewJavascriptBridge);
               return;
           }

           if (window.WVJBCallbacks) {
               window.WVJBCallbacks.push(_callback);
               return;
           }

           window.WVJBCallbacks = [_callback];
           var WVJBIframe = document.createElement('iframe');
           WVJBIframe.style.display = 'none';
           WVJBIframe.src = 'wvjbscheme://__BRIDGE_LOADED__';
           document.documentElement.appendChild(WVJBIframe);
           setTimeout(function () {
               document.documentElement.removeChild(WVJBIframe)
           }, 0)
       }
       InitWebViewJavascriptBridge(function (bridge) {

           productDetail = function (id) {
//注入handlerName为IOSEventClick
              bridge.callHandler('IOSEventClick', {
                   code: id,
                   type: "productDetail",

               }, function (responseData) {
                   // log('IOSEventClick', responseData);
               })
           }

       });