Run results for: unshift() vs push() vs allocate-fill()

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

allocate-fill

3K/s

push

967/s

unshift

2/s

View exact numbers

Tests:

unshift
let a = []; for(var i = 0; i < 100000; ++i) { a.unshift(i); }
push
let a = []; for(var i = 0; i < 100000; ++i) { a.push(i); }
allocate-fill
var array = Array(100000); for(var i = 0; i < array.length; ++i) { array[i] = i; }