Run results for: Add element at index 0 (Splice vs Spread vs unshift) - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Splice	19856554.0 Ops/sec
Unshift	19631252.0 Ops/sec
Spread	55258016.0 Ops/sec

Tests:

Splice
const testArray = [1, 2, 3, 4, 5, 6, 7]; testArray.splice(0, 0, 10);
Unshift
const testArray = [1, 2, 3, 4, 5, 6, 7]; testArray.unshift(10);
Spread
let testArray = [1, 2, 3, 4, 5, 6, 7]; testArray = [10, ...testArray];

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