cc.ContainerStrategy is undefined

cocos2d-x C++
#1

I was trying to use following code in my project, but got

cc.ContainerStrategy is undefined

code below: http://www.cocos2d-x.org/docs/manual/framework/html5/resolution-policy-design/en

var policy = new cc.ResolutionPolicy(cc.ContainerStrategy.PROPORTION_TO_FRAME, cc.ContentStrategy.EXACT_FIT);
cc.EGLView.getInstance().setDesignResolutionSize(320, 480, policy);

any reason?

#2

anyone can help? I include this line in cocos2d-jsb.js