Most efficient way to create a zero filled JavaScript array?

Question

What is the most efficient way to create an arbitrary length zero filled array in JavaScript?

Answer 1

If you use ES6, you can use Array.from() like this:

Array.from({ length: 3 }, () => 0);
//[0, 0, 0]

Has the same result as

Array.from({ length: 3 }).map(() => 0)
//[0, 0, 0]

Because

Array.from({ length: 3 })
//[undefined, undefined, undefined]