Filter an array within an array of objects

Question

I have an array of 10 users, I want to filter the users based on the 'intresses' (that means interests in dutch) array within the users. So for example I want to filter all the users that have the interests 'Afrika' (like index 2).

This is what I tried but it will give me an empty array back.

var newArray = gesorteerdeMatchPercentages.filter((el) => {
        el.intresses.forEach((item) => {
          return item.naam === "Afrika";
        });
      });

      console.log("new", newArray);

Why are you using ===? There is no reason whatsoever for you to do use === in the type of code you're writing. — Armen Michaeli
– Armen Michaeli, Commented Jan 10, 2023 at 15:48
Does this answer your question? Function with forEach returns undefined even with return statement — Ivar
– Ivar, Commented Jan 10, 2023 at 15:48
You're accessing item.naam but the screenshot shows the property is named Intresse_naam. You'll probably want to use a regex as well since that data seems to be somewhat sketchy, e.g., at least one value includes escaped characters. — Dave Newton
– Dave Newton, Commented Jan 10, 2023 at 15:49
forEach does nothing w/ return values; you need to return something from filter. — Dave Newton
– Dave Newton, Commented Jan 10, 2023 at 15:53

Joseph · Accepted Answer · 2023-01-10 15:52:05Z

1

If i understand you correctly you could do that using Array.prototype.some() like this

var newArray = gesorteerdeMatchPercentages.filter((el) => {
 return el.intresses.some(el => el.naam === 'Afrika'); 
});

answered Jan 10, 2023 at 15:52

Joseph

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