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

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

Go to the benchmark
Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Safari/605.1.15
Safari 14
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
toFixed(4) someFloat.toFixed(4); someFloat.t 10640115.0 Ops/sec
toPrecision(4).toString() 9127618.0 Ops/sec
~(someFloat*1000)/-1000 25795182.0 Ops/sec
Math.floor fast 25780622.0 Ops/sec
Math.trunc 10552778.0 Ops/sec
Script Preparation code:
AخA
 
var someFloat = 0.123456789;
Tests:

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

     
    someFloat.toFixed(4);

  • toPrecision(4).toString()

     
    someFloat.toPrecision(4);

  • ~(someFloat*1000)/-1000

     
    ~(someFloat*1000)/-1000

  • Math.floor fast

     
    ~~(someFloat * 10000) / 10000;

  • Math.trunc

     
    Math.trunc(someFloat * 10000) / 10000;