cocos2d-js webview

var webView = new ccui.WebView();
webView.setPosition(cc.p(this._actView.getContentSize().width/2, this._actView.getContentSize().height/2 -20));
webView.setContentSize(cc.size(this._actView.getContentSize().width -150, this._actView.getContentSize().height- 150));
cc.log("this._actView.getContentSize().width/2" + this._actView.getContentSize().width/2);
cc.log("this._actView.getContentSize().height/2" + this._actView.getContentSize().height/2);
webView.loadURL("http://www.baidu.cn/");
webView.setScalesPageToFit(true);
this._actView.addChild(webView);