JavaScript is a programming language which is also known as a high level programming language.The advantage of JavaScript is that you can create a complex app.
In another context, you don’t have to worry about the functionality of the app as building a backbone is either the end of your budget or you are losing motivation.
In that case, a high level language like JavaScript is flexible so you can start your main work without thinking about what is happening behind the scenes.
You can give both your time & effort to your main functionality without worrying about other materials. So choosing JavaScript as a language is an absolute blessing at the present time.