Run results for: list push vs splice

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.3.1

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

append

3.5M/s

splice

3.1M/s

unshift

3.0M/s

reverse

2.3M/s

concat

1.4M/s

View exact numbers

Test name	Executions per second
✓ append	3,495,851 Ops/sec
splice	3,065,083 Ops/sec
unshift	2,966,719 Ops/sec
reverse	2,271,363 Ops/sec
concat	1,448,345 Ops/sec

Script Preparation code:

l = 123;

Tests:

append
a = Array(l); a.push(3);
splice
a = Array(l); a.splice(0,0,3);
reverse
a = Array(l); a.reverse().push(3); a.reverse();
concat
a = Array(l); a = [3].concat(a);
unshift
a = Array(l); a.unshift(3);