Let say I have an array:
const arr = ['a', 'b, 'c'];
I want to create an object like this:
{ 'a': true, 'b': true, 'c': true}
How can I do this?
const obj = {...arr: true}
did not work
Yeah, that's not a valid assignment. The first way that comes to mind - if you want one of those cool ES6 one-liners - would be:
const obj = Object.fromEntries(arr.map((el) => [el, true]));
Using Array#reduce:
const arr = ['a', 'b', 'c'];
const res = arr.reduce((acc, key) => ({ ...acc, [key]: true }), {});
console.log(res);Using Object.assign and spread the array (with map).
const arr = ['a', 'b', 'c'];
const res = Object.assign({}, ...arr.map(key => ({[key]: true})));
console.log(res);