Loop through an Array, add each item to an object and push it to an array in Javascript

Question

I have an array of ID\'s as below:

[121, 432, 322]

I want all of it to be added to an array in the following format (Expected Outpu

Answer 1

While this answer explained the problem of your code. Here is my way to solve the same problem.

const input = [121, 432, 322];
Array.from(input, brand_id => ({ term: { brand_id }}))

Answer 2

You currently only have one variable for format - you're only ever pushing one item to the array, you're just mutating it multiple times, resulting in the array containing 3 references to the same object.

Create the format on each iteration instead. .map is more appropriate than .forEach when transforming one array into another:

const input = [121, 432, 322];
console.log(
  input.map(brand_id => ({ term: { brand_id }}))
);