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How does a JavaScript parser work?

I'm trying to understand how JS is actually parsed. But my searches either return some ones very vaguely documented project of a "parser/generator" (i don't even know what that means), or how to parse JS using a JS Engine using the magical "parse" method. I don't want to scan through a bunch of code and try all my life to understand (although i can, it would take too long).

i want to know how an arbitrary string of JS code is actually turned into objects, functions, variables etc. I also want to know the procedures, and techniques that turns that string into stuff, gets stored, referenced, executed.

Are there any documentation/references for this?

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    Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center. Commented Jul 13, 2022 at 12:28

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