code: function(name,params,callback){
  
          if($bridge['callHandler']){
  
            $bridge.callHandler(name,params,function(data){
              if(typeof callback == 'function'){
                /* 解决部分系统加载延迟导致 ios/android 不响应问题 */
                setTimeout(function(){
                  callback(data);
                },bridgeConfig.bridgeWebViewDelay)
              }
            })
  
          }else {
            console.log("don't built-in WebView invoking ",name,'{callHandler}')
          }
      }
docs: JS 调用 Android / IOS
  
  name: 回调名称, android/ios 名称 ,eg: 'getUserInfo'
  params 请求参数, eg: { 'userId' : 1}
  callback: response(响应函数)
  
  eg: this.$bridge.callHandler('getUserInfo',{'userId':1},function(data){...})