Run results for: Array(n).fill(char) vs Array.from({ length: n }, _ => char) vs manual loop

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Linux

Device Platform: Desktop

Date tested: one month ago

Script Preparation code:

var str = "string";
var n = 1000;

AخA
 
var str = "string";var n = 1000;

Tests:

Array(n).fill(str)
var res = Array(n).fill(str)
var res = Array(n).fill(str)
Array.from({ length: n }, _ => str)
var res = Array.from({ length: n }, _ => str)
var res = Array.from({ length: n }, _ => str)

var res = [];
for (var i = 0; i < n; ++i) { 
  res.push(str)
}

​x
 
var res = [];for (var i = 0; i < n; ++i) {   res.push(str)}​