Hello there,
This has been brought up before:
- Should we expect a new ReactJS course anytime soon? - #2 by Sky020
- Help React bind/this "create-a-controlled-input" challenge - #5 by Sky020
- The future of "ES6"? - Discussion specifically about ES6 in the curriculum
The crux of the matter is:
- Every curriculum on the internet is outdated, from release. So, do not expect to come out of a tutorial/curriculum knowing everything there is.
- Every major codebase is outdated, in one way or another - you have to know the outdated tools to use it.
And, ditto what @jwilkins.oboe said.
Hope this helps some.