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JavaScript JavaScript Quickstart Arrays and Loops Simplify Repetitive Tasks with a forEach Loop

Sean Flanagan
Sean Flanagan
33,235 Points
Posted by Sean Flanagan
Sean Flanagan
33,235 Points

forEach vs for

Hi.

What advantage do forEach loops have over for loops?

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

A "forEach" isn't exactly a loop, it's an array method. So one difference is that you cannot use a "break" or "continue" in it.

But when you want to do something with every array element it can be handy, since it gets passed both the element and the index as arguments.

Another advantage is that it only acts on elements that have been assigned values, so it needs no special testing code when using it on "sparse" arrays.

For more details, see the reference page on MDN.