WebViewJavascriptBridge js和原生交互

function setupWebViewJavascriptBridge(callback) {  
    if (window.WebViewJavascriptBridge) {  
        return callback(WebViewJavascriptBridge);  
    }else{  
        document.addEventListener(  
                'WebViewJavascriptBridgeReady'  
                , function() {  
                    callback(WebViewJavascriptBridge)  
                },  
                false  
        );  
        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)  
    }  
}  
  
setupWebViewJavascriptBridge(function(bridge) {  
    try{ //此处try catch注意  android 有init初始化方法，必须调用 不调用后续注册的事件将无效 而IOS却没有init方法 调用会报错 所以得捕获异常  
        bridge.init(function(message, responseCallback) {  
            console.log('JS got a message', message);  
            var data = {  
                'Javascript Responds': '测试中文!'  
            };  
            console.log('JS responding with', data);  
            responseCallback(data);  
        });  
    }catch(e){  
  
    }  
  
    bridge.registerHandler('orderResultJsHandler', function(data, responseCallback) {  
        //处理回调  
    });  
  
});