我的第一篇博客

　　　　const ua = navigator.userAgent
      const isAndroid = ua.indexOf(‘Android‘) > -1 || ua.indexOf(‘Linux‘) > -1
      var jsBridge={};
      /* 安卓 */
      jsBridge.androidJsbridge=function(callback){
        if(window.WebViewJavascriptBridge){
          Toast(‘存在实例‘)
          callback(WebViewJavascriptBridge)
        }else{
          document.addEventListener(‘WebViewJavascriptBridgeReady‘, () => {
            Toast(‘返回WebViewJavascriptBridge实例‘)
            Toast(WebViewJavascriptBridge)
            callback(WebViewJavascriptBridge)
          }, false)
        }
      }
      /* ios */
      jsBridge.iosJsBridge=function(callback){
        if (window.WVJBCallbacks) {
          return window.WVJBCallbacks.push(callback(WebViewJavascriptBridge))
        }
        window.WVJBCallbacks = [callback(WebViewJavascriptBridge)]
        Toast(‘返回WebViewJavascriptBridge实例‘)
        Toast(WebViewJavascriptBridge)
        var WVJBIframe = document.createElement(‘iframe‘)
        WVJBIframe.style.display = ‘none‘
        WVJBIframe.src = ‘https://__bridge_loaded__‘
        document.documentElement.appendChild(WVJBIframe)
        setTimeout(() => { document.documentElement.removeChild(WVJBIframe) }, 0)
      }
      jsBridge.init=(callback)=>{
        if(isAndroid){
          jsBridge.androidJsbridge(callback)
        }else{
          return  jsBridge.iosJsBridge(callback)
        }
      }
      const instance=jsBridge.init(callback)