Run results for: unshift vs push 100

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.6 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
push	9680730.0 Ops/sec
unshiftt	7028086.0 Ops/sec

Script Preparation code:

var a = [
   0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
  10,11,12,13,14,15,16,17,18,19,
  20,21,22,23,24,25,26,27,28,29,
  30,31,32,33,34,35,36,37,38,39,
  40,41,42,43,44,45,46,47,48,49,
  50,51,52,53,54,55,56,57,58,59,
  60,61,62,63,64,65,66,67,68,69,
  70,71,72,73,74,75,76,77,78,79,
  80,81,82,83,84,85,86,87,88,89,
  90,91,92,93,94,95,96,97,98,99,
];

Tests:

push
a.push('a');
unshiftt
a.unshift('a')

Run results for: unshift vs push 100

push

unshiftt