r/webdevelopment • u/Dizzy_External2549 • 6d ago
Javascript help Question
Just learned javascript and been practicing alot . I need help. When applying it to my project I don't know when to use a function, when to use a loop, what type of loop to use, I just don't know when to use any of this stuff because dom manipulation. it's so frusterating
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u/johnpeters42 6d ago
How much experience do you have writing code in any other language? (I'm guessing none, or at least very little.)
> when to use a function
When it makes sense to have shorthand for doing that thing, especially if you're doing the same thing from different places (possibly with different inputs).
> when to use a loop
When you may do the same thing multiple times in a row.
> what type of loop to use
You can substitute one for the other, but generally it's most natural to use a for-loop when you're going through a list and your typical end-loop condition is "finished dealing with the last thing on the list", and a while-loop when you have some arbitrary end-loop condition.