MeasureThat.net

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

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36
Chrome 99
Windows
Desktop
3 years ago
Test name Executions per second
toFixed(4) 4197909.5 Ops/sec
toPrecision(4).toString() 4347814.5 Ops/sec
(Math.round(*10000)/10000).toString() 4850395.0 Ops/sec
Math.floor fast 14120620.0 Ops/sec
Script Preparation code:
AخA
 
var someFloat = 0.123456789;
Tests:

  • toFixed(4)

     
    someFloat.toFixed(4);

  • toPrecision(4).toString()

     
    someFloat.toPrecision(4);

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

    ​x
     
    (Math.round(someFloat*10000)/10000);
    ​

  • Math.floor fast

     
    ~~(someFloat * 10000) / 10000;