Run results for: padStart vs concat

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/117.0

Browser: Firefox 117

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
padStart	14.8 Ops/sec
concat	16.2 Ops/sec

HTML Preparation code:

<script>
	let fecha = new Date('01-01-1970');
</script>

Tests:

padStart
let str_fecha = ''; for (let i = 0; i <100000; i++) { str_fecha = fecha.getFullYear() + '-' + (fecha.getMonth() + 1).toString().padStart(2, '0') + '-' + fecha.getDate().toString().padStart(2, '0'); }
concat
let str_fecha = ''; for (let i = 0; i <100000; i++) { str_fecha = fecha.getFullYear() + '-'; str_fecha += ((fecha.getMonth() + 1) < 10 ? '0' : '') + (fecha.getMonth() + 1) + '-'; str_fecha += (fecha.getDate() < 10 ? '0' : '') + fecha.getDate(); }