Converting a piece of javascript from .forEach to for Loop

General
21

Would it be this instead?

for (let i = 0; i < coverOpts.length; i++)

22

That makes more sense to me.

This forEach loops over the element in an array, so it makes sense to use the length of this array in your for loop version.

1 Like
23

Looking at how my previous codes are written.

From this:

  function initCovers(coverOpts) {
    coverOpts.forEach(function (opts) {
      init(opts);
    });
  }

To this?
https://jsfiddle.net/gyn7x1mp/

  function initCovers(coverOpts) {
    for(let i = 0; i < coverOpts.length; i++) {
      init(coverOpts[i]);
    }
  }
24

You tell us :slight_smile: Does the for loop work the same as the forEach loop? This should be pretty easy to test by running the code.

1 Like
25

Everything works the same as it should.

26

It sounds like you could do with some refreshing your knowledge of how for loops work. I would recomend looking for a basic JS course. FCC of course offers one.

1 Like
27

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