Run results for: toFixed vs toPrecision vs Math.round()

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; SAMSUNG SM-J810G) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/16.0 Chrome/92.0.4515.166 Mobile Safari/537.36

Browser: Chrome Mobile 92

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

(Math.round(*10000)/10000).toString()

295K/s

toFixed(4)

279K/s

toPrecision(4).toString()

264K/s

View exact numbers

Test name	Executions per second
✓ (Math.round(*10000)/10000).toString()	295,304 Ops/sec
toFixed(4)	279,439 Ops/sec
toPrecision(4).toString()	264,386 Ops/sec

Script Preparation code:

var someFloat = 0.123456789;

Tests:

toFixed(4)
someFloat.toFixed(4);
toPrecision(4).toString()
someFloat.toPrecision(4).toString();
(Math.round(*10000)/10000).toString()
(Math.round(someFloat*10000)/10000).toString();