Benchmark: toFixed vs toPrecision vs Math.round() vs Math.floorfast - MeasureThat.net

Script Preparation code:

var someFloat = 0.123456789;

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
toFixed(4)
toPrecision(4).toString()
(Math.round(*10000)/10000).toString()
Math.floor fast

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 23 days ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Browser/OS: Chrome 127 on Linux

View result in a separate tab

Test name	Executions per second
toFixed(4)	3854883.0 Ops/sec
toPrecision(4).toString()	4742420.0 Ops/sec
(Math.round(*10000)/10000).toString()	5115640.0 Ops/sec
Math.floor fast	13172650.0 Ops/sec