Can I Learn JavaScript through only Grasshopper?

Is there anyone who learn JavaScript by using Grasshopper? I’m learning JavaScript for Web development , Is it possible to learn JavaScript from this app ?

Some people says that This App isn’t Enough to learn JavaScript for Web Development? What are your thoughts ?

Anyone learn JavaScript from this App for Web development???

This app is a great starting point for consolidating the basic concepts of JavaScript.

However, it probably shouldn’t be the only resource you use for learning JavaScript.

I would recommend reading this post to further develop your understanding: