Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36
Chrome 86
Windows
Desktop
4 years ago
Test name Executions per second
toFixed(4) 565642.9 Ops/sec
toPrecision(4).toString() 744703.8 Ops/sec
(Math.round(*10000)/10000).toString() 868123.4 Ops/sec
Math.floor fast 2515903.0 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;