Do I need to learn ES5 now or is it deprecated and worth looking towards ES6 and beyond?

Question

JavaScript

Or is ES6 sugar over ES5? And it should be left for dessert.

Answer 1

Nobody canceled ES5. ES6 added several new features. If you have a good ES5 tutorial/course, feel free to use it.

Answer 2

Answer: No
It all depends on the tasks you face, as well as on the contingent for which the functionality is being developed. In very many areas, some clients do not use modern browsers, and the question depends on what this% is and how old they are ... well, how much you need to support for these clients and at what level .... In general, from depends on many facts ... As a decision, not to invent a bicycle, if the capabilities of the old versions of the language allow you to completely cover all the necessary tasks, then you should use them ... And when you want to play around with something new, then integrate this new one only to those circles where 100% confidence in using the latest versions of browsers, or at least it is possible to force users to update them without much time and damage to the work of the final ones in general ..