CODEWITHSUNDEEP
javascript
geogrow
geogrow

Reputation: 505

Match array value with value in an array of objects javascript

I am trying to work out how I can return a list with values from the own key in the array bellow if the object name value matches values in the lookupvalues array

lookupvalues = ["ross","linda"]
resources = [{own: "car", name: "bob"},{own: "bike", name: "ross"},{own: "plane", name: "linda"}]
wanted_output = ["bike","plane"]

I am struggling a bit with a good method to use for when I need to compare value in an object with array values. Is there a reasonable straight forward way to do this?

I must say how impressed I am that I got 4 replies with working examples at the same time!

Upvotes: 0

Views: 362

Answers (4)

Eason Yu
Eason Yu

Reputation: 329

resources.filter(item => lookupvalues.indexOf(item.name) > -1).map(item => item.own)

Upvotes: 1

Fullstack Guy
Fullstack Guy

Reputation: 16908

You can take the help of Array#filter and Array#map:

const lookupvalues = ["ross","linda"]
const resources = [{own: "car", name: "bob"},{own: "bike", name: "ross"},{own: "plane", name: "linda"}]

const filterRes = (arr) => {
  const lookup = new Set(lookupvalues);
  return arr.filter(({name}) => lookup.has(name))
            .map(({own}) => own);
}
console.log(filterRes(resources));

Upvotes: 1

Cory Harper
Cory Harper

Reputation: 1055

resources.filter(resource => lookupvalues.includes(resource.name))
  .map(resource => resource.own);

This will filter by the items that have names that are included in lookupvalues, and then transform the array into an array of the own values of those remaining.

Upvotes: 1

hgb123
hgb123

Reputation: 14871

One way (array method chaining) is that you could filter by name and map to grap each's own

const lookupvalues = ["ross", "linda"]
const resources = [
  { own: "car", name: "bob" },
  { own: "bike", name: "ross" },
  { own: "plane", name: "linda" },
]

const res = resources
  .filter(({ name }) => lookupvalues.includes(name))
  .map(({ own }) => own)

console.log(res)

Upvotes: 1

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