Run results for: To fixed vs round vs to precision with float

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.66 Safari/537.36

Browser: Chrome 87

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
parseFloat(someFloat.toFixed(4));	1595284.8 Ops/sec
someFloat.toPrecision(4)	3319128.5 Ops/sec
(Math.round(someFloat*10000)/10000)	3874758.2 Ops/sec

Script Preparation code:

var someFloat = 0.123456789;

Tests: