JavaScript loops and iteration

Last updated: November 2, 2025

OK. So, there are more ways to iterate over things…

Recap

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MDN: array.forEach()  (method)

Live examples

See the Pen Live examples by perpetual.education (@perpetual-education) on CodePen.

Do what while what?

MDN: while statement (loop)

MDN: do…while statement (loop)

Let’s do these before the for loop – because they are simple… but have more to consider in a way… and the for loop kinda encapsulates it all.

for statement

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MDN: for statement (loop)

Break and Continue

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for…in & for…of

MDN: for…in (loop)

MDN: for…of (loop)