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Run results for: toFixed vs toPrecision vs Math.round() without string conversion

Comparison of speed where string/number conversion isn't a factor

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36
Chrome 80
Mac OS X 10.15.3
Desktop
4 years ago
Test name Executions per second
toFixed(4) 2961364.0 Ops/sec
toPrecision(4) 4079566.0 Ops/sec
(Math.round(*10000)/10000) 5232912.0 Ops/sec
Website performance monitoring
Script Preparation code:
Tests:

  • toFixed(4)

  • toPrecision(4)

  • (Math.round(*10000)/10000)