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Run results for: Rounding to precision

Comparing performance of: toFixed(4) vs toPrecision(4).toString() vs (Math.round(*10000)/10000).toString(). Please note that Math.floor, Math.trunc and ~~ can't be used for accurate rounding

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.102 Safari/537.36
Chrome 85
Windows
Desktop
3 years ago
Test name Executions per second
toFixed(4) someFloat.toFixed(4); someFloat.t 3134625.0 Ops/sec
toPrecision(4).toString() 3688846.0 Ops/sec
(Math.round(*10000)/10000).toString() 4192394.0 Ops/sec
Website performance monitoring
Script Preparation code:
Tests:

  • someFloat.toFixed(4)

  • someFloat.toPrecision(4)

  • Math.round(someFloat*10000)/10000