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Run results for: toFixed vs toPrecision vs Math.round() vs Math.floorfast vs new Math.trunc

Comparing performance of: toFixed(4) vs toPrecision(4).toString() vs (Math.round(*10000)/10000).toString() vs Math.floor fast vs the new Math.trunc

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0
Firefox 77
Mac OS X 10.15
Desktop
4 years ago
Test name Executions per second
toFixed(4) someFloat.toFixed(4); someFloat.t 7634306.0 Ops/sec
toPrecision(4).toString() 7244913.0 Ops/sec
(Math.round(*10000)/10000).toString() 87559208.0 Ops/sec
Math.floor fast 250508352.0 Ops/sec
Math.trunc 87054928.0 Ops/sec
Script Preparation code:
Tests:

  • toFixed(4) someFloat.toFixed(4); someFloat.t

  • toPrecision(4).toString()

  • (Math.round(*10000)/10000).toString()

  • Math.floor fast

  • Math.trunc