Run results for: map speed

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4695.0 Safari/537.36

Browser: Chrome 100

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
native map	2620452.2 Ops/sec
costume	1973729.5 Ops/sec

Tests:

native map
let arr = [1,3,5,7,9,2,4,6,8,0]; let native = arr.map(item => item*2+3);
costume
let arr = [1,3,5,7,9,2,4,6,8,0]; let i=0, len=arr.length, out=new Array(len); for (; i < len; i++) { out[i] = arr[i]*2+3; }