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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 14_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 14

Operating system: iOS 14.7.1

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
toFixed(4)	4800683.5 Ops/sec
toPrecision(4).toString()	3654718.8 Ops/sec
(Math.round(*10000)/10000).toString()	2928240.2 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();

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

toFixed(4)

toPrecision(4).toString()

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