Run results for: concat vs push in various ways

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:81.0) Gecko/20100101 Firefox/81.0

Browser: Firefox 81

Operating system: Mac OS X 10.13

Device Platform: Desktop

Date tested: 3 years ago

Tests:

concat
let x = []; let y = [1, 2, 3, 4, 5, 6, 7]; for (let ii = 0; ii < 1000; ii++) { x = x.concat(y); }
push with rest params
let x = []; let y = [1, 2, 3, 4, 5, 6, 7]; for (let ii = 0; ii < 1000; ii++) { x.push(...y); }
push in for loop
let x = []; let y = [1, 2, 3, 4, 5, 6, 7]; for (let ii = 0; ii < 1000; ii++) { for (let item of y) { x.push(item); } }
push with forEach
let x = []; let y = [1, 2, 3, 4, 5, 6, 7]; for (let ii = 0; ii < 1000; ii++) { y.forEach(num => x.push(num)); }