Run results for: Array.map vs For Loop

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.135 Safari/537.36

Browser: Chrome 84

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Array.map	48135.7 Ops/sec
Loop for	7710435.0 Ops/sec

Script Preparation code:

 datas = [];
for (let i=0; i<= 1000; i++) {
 	 datas.push({
       	objectId: null,
       	revisionId : null
     });
}

Tests:

Array.map
const result = []; datas.map(eg => result.push({ objectId: eg.objectId, revisionId: eg.revisionId }));
Loop for
const result = []; for (let i=0; i<= datas.lentgh; i++) { result.push({ objectId: datas[i].objectId, revisionId : datas[i].revisionId }); }