cocos2d-html5 download and look at the readme file,
Mobile platforms in the coming soon became,
Are you talking about the iphone safari Mobile platforms?
I am now using cocos2d api javascript language,
I would like to create a webapp.
Please tell me how
it works on mobile browsers to some limitations, for example, only 1 audio for IOS
however the performance of mobile phones are not ready for mobile browser app in my opinion, if your game is not graphic intensive, you should be fine, otherwise, wait for javascript binding for cocos2d-x and cocos2d-iphone. mind you that cocos2d-javascript api is different and will not be supported on javascript binding for cocos2d-x/iphone