JS How to save the result of a for loop as an array?

Question

const cars = ['BMW', 'Volvo', 'Saab', 'Ford', 'Fiat', 'Audi'];
const arr = [];

for (let i = 0; i < cars.length; i++) {
  const i = 'hi';
  console.log(i);
}

the result of this code would be:

hi
hi
hi
hi
hi
hi

how can I save this result to a variable as an array? The returned value should be: ['hi','hi','hi','hi','hi','hi']

Why are you declaring i inside the loop with the same name as the loop counter? What if you needed the value of the loop counter inside the loop? — PeterKA
– PeterKA, Commented Dec 17, 2021 at 19:11

Alfredo · Accepted Answer · 2021-12-17 19:27:11Z

1

const cars = ['BMW', 'Volvo', 'Saab', 'Ford', 'Fiat', 'Audi'];
const arr = [];
const x = 'hi';

for (let i = 0; i < cars.length; i++) {
  arr.push(x);
}

answered Dec 17, 2021 at 19:27

Alfredo

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Comments

amanpurohit · Accepted Answer · 2021-12-17 19:38:06Z

1

The best thing you can make use of is map operator

const cars = ['BMW', 'Volvo', 'Saab', 'Ford', 'Fiat', 'Audi'];
const arr = cars.map(car => 'hi');

answered Dec 17, 2021 at 19:38

amanpurohit

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1 Comment

Jared Farrish Over a year ago

Also [...cars].fill('hi')

The fourth bird · Accepted Answer · 2021-12-17 22:29:03Z

0

Another option using Array.from()

const cars = ['BMW', 'Volvo', 'Saab', 'Ford', 'Fiat', 'Audi'];
const arr = Array.from(cars, _ => "hi");

const cars = ['BMW', 'Volvo', 'Saab', 'Ford', 'Fiat', 'Audi'];
const arr = Array.from(cars, _ => "hi");
console.log(arr);

answered Dec 17, 2021 at 22:29

The fourth bird

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