api修改情况。左边为新增，右边为原来的。
cc.log 不变
cc.warn 新增
cc.error 新增
cc.assert <-- cc.Assert
此次改造有下面几点原因：
加入原来没有的api：cc.warn、cc.error。
改动cc.Assert名称。使其符合开发规范。
新的api的使用范例：
cc.log("this is a log");
cc.log("this is a log for %s", "Cocos2d-html5");
cc.warn("this is a waring");
cc.warn("this is a waring for %s", "Cocos2d-html5");
cc.error("this is an error");
cc.error("this is an error for %s", "Cocos2d-html5");
cc.assert(false, "this is an assert");
cc.assert(false, "this is an assert for %s", "Cocos2d-html5");
然后今后会定义出msgCode.js
cc.msgCode = {
log1 : "this is a log",
log2 : "this is a log for %s",
warn1 : "this is a waring",
warn2 : "this is a waring for %s",
error1 : "this is an error",
error2 : "this is an error for %s",
assert1 : "this is an assert",
assert2 : "this is an assert for %s",
throw1 : "this is an throw",
throw2 : "this is an throw for %s", "Cocos2d-html5"
}
这样一来能够让消息字符串等到最大程度的复用而且利于管理。