find object in array, to find object where id match substring

Question

I get a lot of arrays from API but a count of id different and I need to check for match [id = region...] and to get only this object. How I can do this using regular expressions and find?

(5) [{…}, {…}, {…}, {…}, {…}]
0: {id: "address.7576869587107444", type: "Feature", place_type: Array(1), relevance: 1, properties: {…}, …}
1: {id: "postcode.12959148828066430", type: "Feature", place_type: Array(1), relevance: 1, properties: {…}, …}
2: {id: "place.14392640799224870", type: "Feature", place_type: Array(1), relevance: 1, properties: {…}, …}
3: {id: "region.9375820343691660", type: "Feature", place_type: Array(1), relevance: 1, properties: {…}, …}
4: {id: "country.13200156005766020", type: "Feature", place_type: Array(1), relevance: 1, properties: {…}, …}
length: 5
__proto__: Array(0)


.then(res => {
        let region = /region/gi
        console.log(res.data.features.find(place => place.id == region.test(place)))
        setAdrress(res.data)
      })

Does this answer your question? In javascript, how do you search an array for a substring match — Heretic Monkey
– Heretic Monkey, Commented Aug 10, 2020 at 19:31

Unmitigated · Accepted Answer · 2020-08-10 19:23:11Z

1

Use String#match.

console.log(res.data.features.find(place => place.id.match(region)))

const arr = [{id: "address.7576869587107444", type: "Feature"},
{id: "postcode.12959148828066430", type: "Feature"},
{id: "place.14392640799224870", type: "Feature"},
{id: "region.9375820343691660", type: "Feature"},
{id: "country.13200156005766020", type: "Feature"}];
let region = /region/gi;
console.log(arr.find(place => place.id.match(region)))

edited Aug 10, 2020 at 19:23

answered Aug 10, 2020 at 19:19

Unmitigated

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1 Comment

Unmitigated Over a year ago

@JessicaBulldog Glad to help.

lyzaculous · Accepted Answer · 2020-08-10 19:48:34Z

0

You can filter the array and check with a regex to achieve that.

var regex = RegExp(/^region/);
var filtered_arr = arr.filter(obj => regex.test(obj.id));

filtered_arr will contain your array of the objects where the id starts with region

Using regex will ensure that all the string which start with region will be filtered. Using something like match will find the ids which have region anywhere in the string. I couldn't comment on the first post as I don't have enough reputation. :)

answered Aug 10, 2020 at 19:48

lyzaculous

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