Run results for: JS Shift vs Pop w/ Push

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 26

Operating system: iOS 18.7

Device Platform: Mobile

Date tested: 6 months ago

Pop

2K/s

Shift

413/s

View exact numbers

Test name	Executions per second
✓ Pop	1,897 Ops/sec
Shift	413 Ops/sec

Script Preparation code:

var array = [];

for(var i = 0; i < 100000; i++){array.push(Math.random());}

Tests:

Pop
for(var i = 0; i < 100000; i++) { let val = array.pop() array.push(val) }
Shift
for(var i = 0; i < 100000; i++) { let val = array.shift() array.push(val) }