Nested array filtering [duplicate]

Question

categories.location array is filtered like this:

  const displayedCategories = categories.filter(
    (category) => category.location.indexOf(selectedLocation) >= 0
  );

Now its structure is changed like below, there's additional nested values. How can I filter value/label now? category.location.value.indexOf doesn't work. Thanks.

"location" : [ 
    {
        "value" : "London",
        "label" : "London"
    }
             ]

Does this answer your question? Filter nested array in object array by array of values — taha
– taha, Commented May 27, 2020 at 19:35

Nikos M. · Accepted Answer · 2020-05-27 19:35:34Z

1

Try:

const displayedCategories = categories.filter(
    (category) => category.location.some(loc=>loc.value==selectedLocation)
  );

edited May 27, 2020 at 19:35

answered May 27, 2020 at 19:34

Nikos M.

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2 Comments

Jacob Over a year ago

It's better to do category.location.some(loc => loc.value === selectedLocation) so you finish after the first match is found rather than looping through everything and building an array just so you can inspect the length.

Nikos M. Over a year ago

@Jacob, good catch!

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