Run results for: toFixed vs toPrecision vs Math.round() different - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0

Browser: Firefox 91

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
toFixed(4)	10817670.0 Ops/sec
toPrecision(4).toString()	17386360.0 Ops/sec
(Math.round(*10000)/10000).toString()	1933860000.0 Ops/sec

Website performance monitoring

Script Preparation code:

var someFloat = 0.123456789;

Tests:

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