Run results for: list push vs splice - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36

Browser: Chrome 101

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
append	1426084.9 Ops/sec
splice	1305724.2 Ops/sec
reverse	253266.2 Ops/sec
concat	1202062.5 Ops/sec
unshift	1482447.9 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);