Run results for: leftPad vs nativeLeftPad

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36

Browser: Chrome 112

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
nativeLeftPad	40665944.0 Ops/sec
leftPad	30422276.0 Ops/sec

Tests:

nativeLeftPad
function nativeLeftPad(string, len, ch) { return string.padStart(len, ch); } nativeLeftPad('abcdefg', 10, '0')
leftPad
function leftPad(str, len, ch) { let new_str = `${ch.repeat(len)}${str}`; return new_str.slice(-len); } leftPad('abcdefg', 10, '0')