Javascript | Set all values of an array

Question

Code

var cool = new Array(3);
cool[setAll] = 42; //cool[setAll] is just a pseudo selector..
alert(cool);

Result

Answer 1

The ES6 approach is very clean. So first you initialize an array of x length, and then call the fill method on it.

let arr = new Array(3).fill(9)

this will create an array with 3 elements like:

[9, 9, 9]