Run results for: empty an array in JavaScript - splice vs setting length

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36 Edg/100.0.1185.39

Browser: Chrome 100

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Set length to zero	23038.2 Ops/sec
Splice	18943.8 Ops/sec

Tests:

Set length to zero
var size = 10000; var arr2 = []; for (var i = 0; i < size; i++){ arr2.push(i); } arr2.length = 0;
Splice
var size = 10000; var arr3 = []; for (var i = 0; i < size; i++){ arr3.push(i); } arr3.splice(0);