I have studied different different programming languages but now i think i just forgot all of these?

Question

Is this is necessary to remember each tag in html each line in php python JS and each headerfile in Cc++..???
https://www.sololearn.com/discuss/668238/?ref=app

Answer 1

Focus is power my friend.
Vast and shallow vs. narrow and deep

pick one...

Answer 2

focus on one language, after you more familiar with it, go to next language you want to learn

Answer 3

I know I can only very good at one thing. I only study Javascript. I can master Javascript now, I know nothing about Java and others.