Performance Cocos2d-x vs Cocos2d-js

cocos2d-x C++
#1

I’m wondering is there any performance difference between this 2 since i’m more familiar with javascript and not C++, would like to learn C++ if the performance is better in cocos2d-x.

And there is also a code editor (cocos) for JS and lua but not for C++ which we need xcode(ios) and eclipse(android) for development.

#2

Generally speaking you don’t need to be worried about performance, just use what ever you feel comfortable with.