Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36
Chrome 69
Windows
Desktop
6 years ago
Test name Executions per second
toFixed(4) 1247738.1 Ops/sec
toPrecision(4).toString() 2831632.0 Ops/sec
(Math.round(*10000)/10000).toString() 3245616.5 Ops/sec
Script Preparation code:
AخA
 
var someFloat = 0.123456789;
Tests:
  • toFixed(4)

     
    Number(someFloat.toFixed(4));
  • toPrecision(4).toString()

     
    someFloat.toPrecision(4)
  • (Math.round(*10000)/10000).toString()

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