Run results for: join vs combine

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36

Browser: Chrome 89

Operating system: Mac OS X 10.15.4

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
str combine	1841.5 Ops/sec
join	16663.5 Ops/sec

Script Preparation code:


var props = Array.from({length:1000}).fill(0)

Tests:

str combine
let propsNamesString = `[` for (let i = 0, l = props.length; i < l; i++) { propsNamesString += JSON.stringify(props[i]) if (i < l - 1) propsNamesString += ', ' } propsNamesString + `]`
join
let propsNamesString = `[${props.join(', ')}]`