Is it possible to remember all JavaScript instructions/commands?

Question

how does a professional js developer works? does he remember all the instructions/commands? or is it necessary? because when I develop new apps I come across new ones. so should I learn according to the requirements? or first should I learn all and then start developing?

Answer 1

You learn all of those by programming. At the beginning you'll need to look up quite a few, but with the time u'll remember them and u have to look up less and less. So...

learning by doing

Answer 2

hey martin, thank you very much for the reply.
but, how much should I learn to land a job?

Answer 3

I don't have experience in that, sorry mate