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I think "JavaScript: The Good Parts" is outdated now, in particular the way it advocates handling object-oriented programming and inheritance with a "roll your own" method. It was great for its time, but especially with the advent of ES2015, modern JavaScript is going in a different direction.

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My point was, it's not outdated. Javascript 2016 just got new featured that oviously aren't covered. The class syntax is just a syntactic sugar and it's important to understand how it's working under the hood. JS has prototype based inheritance, which is more powerful and flexible than class based inheritance. JS is therefor different to grasp than Java and C#. There are still many coding JS and don't get it.

I don't recommend using the class syntax and I would even advise to favour composition over inheritance.

Sadly, I think JS is at its best with most of ES3, a little of ES5, and drop of ES6. There's still a tiny, good (Ok... adequate) language underneath all the cruft. But unfortunately there's a lot of extra unnecessary complexity in JS that makes it easy for us to write unneccesarily complex and unreliable code.

And unfortunately, I think that because that complexity is there, programmers may feel they have to understand and use that complexity. Instead they should be actively preventing it from entering their brains and their codebase.

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