TypeError: cc.NodeLoaderLibrary is undefined

cocos2d-x JavaScript
#1

`var MyScene = cc.Scene.extend({
onEnter:function () {
this._super();

    cc.BuilderReader.setResourcePath("res/");
    /* Create an autorelease CCNodeLoaderLibrary. */
    var ccNodeLoaderLibrary = cc.NodeLoaderLibrary.newDefaultCCNodeLoaderLibrary();

    ccNodeLoaderLibrary.registerCCNodeLoader();
    /* Create an autorelease CCBReader. */
    var ccbReader = new cc.BuilderReader(ccNodeLoaderLibrary);
    ccbReader.setCCBRootPath("res/");

    /* Read a ccbi file. */
    var node = ccbReader.readNodeGraphFromFile("res/CCB/主界面.ccbi", this);

    if(node != null) {
        this.addChild(node);
    }

    this.setPosition(cc.p(0, 0));


}

});`

It warn TypeError: cc.NodeLoaderLibrary is undefined when I use MyScene in cocos2d-x 2.1.4