Run results for: JS Push vs Unshift

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

.push()

1.2M/s

.unshift()

8/s

View exact numbers

Test name	Executions per second
✓ .push()	1,228,349 Ops/sec
.unshift()	8 Ops/sec

Script Preparation code:

const arr = []

Tests:

.push()
arr.push({name: "lorem1", label: "lorem1"}, {name: "lorem2", label: "lorem2"}, {name: "lorem3", label: "lorem3"})
.unshift()
arr.unshift({name: "lorem1", label: "lorem1"}, {name: "lorem2", label: "lorem2"}, {name: "lorem3", label: "lorem3"})