4.4 Cocos2d-JS的屏幕適配方案
http://www.cocos.com/doc/article/index?type=cocos2d-x&url=/doc/cocos-docs-master/manual/framework/cocos2d-js/4-essential-concepts/4-4-resolution-policies/zh.md
4.4 Cocos2d-JS的屏幕適配方案
http://www.cocos.com/doc/article/index?type=cocos2d-x&url=/doc/cocos-docs-master/manual/framework/cocos2d-js/4-essential-concepts/4-4-resolution-policies/zh.md