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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.115 Safari/537.36

Browser: Chrome 92

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Script Preparation code:

var someFloat = 0.123456789;
var customRound = x => (x + (x > 0 ? 0.5 : -0.5)) << 0;

Tests:

toFixed(2)
someFloat.toFixed(2);
toPrecision(2).toString()
someFloat.toPrecision(2).toString();
(Math.round(*100)/100).toString()
(Math.round(someFloat*100)/100).toString();
(Math.round(*100) * 0.01).toString()
(Math.round(someFloat*100)*0.01).toString();
customRound(*100) * 0.01.toString()
(customRound(someFloat*100)*0.01).toString();