How can I map array items to new object with custom properties?

Question

This is my array:

const arr = ['first string', 'second string'];

How can I map this, so I get:

const obj = {'first string': 'found', 'second string', 'found'};

I have tried this:

const obj = arr.forEach(item => {item: 'found'}) but it is not working.

Answer 1

You can use Array.reduce() instead of forEach()

BUT, you cannot assign duplicate keys to an object.

const arr = ['some string', 'some string', 'another string', 'totally different'];


var obj = arr.reduce((acc, cur) => {
  acc[cur] = 'found'
  return acc;
}, {});

console.log(obj);

Answer 2

Try this:

const arr = ['first string', 'second string'];
const res = Object.assign({}, ...arr.map((s) => ({[s]: 'found'})));

console.log(res);

Answer 3

You can do something like this:-

const obj = {};
arr.forEach(item => {
    obj[item] = 'found';
});

Answer 4

Not so sure about what you want, but this maybe your solution:

const arr = ['some string1', 'some string2'];
const ans = Object.fromEntries(arr.map(item => [item, 'found']));
console.log(ans);