Javascript: Go over an array of objects and add a key/value according to whether one of the values is included in another array

Question

Basically, here is what I am trying to do.

Go through each entry of the 'food' array and check whether the 'category' value is included in the 'target' array.
Insert another key/value pair (target:true or target:false) accordingly.

i.e.,

const food = [
   {category: 'fruit', price: 5}, 
   {category: 'meat', price: 10}, 
   {category: 'drink', price: 3}
];

const target = ['fruit', 'meat'];

const result = [
   {category: 'fruit', price: 5, target: true}, 
   {category: 'meat', price: 10, target: true}, 
   {category: 'drink', price: 3, target: false}
];

What will be the code to do this? Thanks a lot in advance!

Nikita Madeev · Accepted Answer · 2020-09-28 12:04:38Z

1

Array.prototype.map()

Array.prototype.includes()

const food = [
    { category: "fruit", price: 5 },
    { category: "meat", price: 10 },
    { category: "drink", price: 3 },
];
const target = ["fruit", "meat"];

const result = food.map(f => ({ ...f, target: target.includes(f.category) }));

console.log(result);

answered Sep 28, 2020 at 12:04

Nikita Madeev

4,49012 silver badges23 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Javascript: Go over an array of objects and add a key/value according to whether one of the values is included in another array

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related