Run results for: JS Push vs Unshift

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:145.0) Gecko/20100101 Firefox/145.0

Browser: Firefox 145

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 8 months ago

.push()

5.2M/s

.unshift()

5K/s

View exact numbers

Test name	Executions per second
✓ .push()	5,232,815 Ops/sec
.unshift()	4,856 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"})