Read "JavaScript: The Definitive Guide" and maybe "Javascript, the good parts" (good advice, but a bit dated).
Proceed to reed guides on modern frameworks like Vue/React (no need to bother with angular). Check out what node has to offer.
10 years ago I would have suggested to read website sources to see how things are done, but nowadays it's akin to browsing jvm bytecode, so do some projects instead
Logan Rivera
Angular has gotten FAR better with all of the 2+ versions compared to what it used to be in the 1.x versions.
Jose Allen
Go is the only correct answer.
Landon Hernandez
Is angular the #1 frontend framework or which one claims that title?
Jordan Fisher
Does HTML still hold that title?
Sebastian Morris
stop being obtuse
Gavin Myers
What about Elixir? Crystal would be good if it wasn't such a marginal meme.