Run results for: asasasasasa

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.190 Safari/537.36

Browser: Chrome 88

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
for-in	318751.3 Ops/sec
object.keys	104781.2 Ops/sec

Tests:

for-in
const List = [ { id: '111', Count: 2 }, { id: '222', Count: 2 }, { id: '333', Count: 2 }, { id: '323333', Count: 1 }, { id: '555111', Count: 1 }, { id: '700000', Count: 1 }, { id: '700001', Count: 1 }, { id: '900111', Count: 1 }, { id: '989222', Count: 1 }, { id: '999999', Count: 1 } ]; const target = [{"id":"111","subject":"SAMPLE","comments":10012},{},{"id":"333","subject":"SAMPLE","comments":0},{},{},{},{},{},{},{}]; const xx =[]; for (let i = 0; i < List.length; i+=1){ if('id' in target[i]){ xx.push(Object.assign(target[i],List[i])) } }
object.keys
const List = [ { id: '111', Count: 2 }, { id: '222', Count: 2 }, { id: '333', Count: 2 }, { id: '323333', Count: 1 }, { id: '555111', Count: 1 }, { id: '700000', Count: 1 }, { id: '700001', Count: 1 }, { id: '900111', Count: 1 }, { id: '989222', Count: 1 }, { id: '999999', Count: 1 } ]; const target = [{"id":"111","subject":"SAMPLE","comments":10012},{},{"id":"333","subject":"SAMPLE","comments":0},{},{},{},{},{},{},{}]; const xx =[]; for (let i = 0; i < List.length; i+=1){ if(Object.keys(target[i]).length){ xx.push(Object.assign(target[i],List[i])) } }