MeasureThat.net

Run results for: parseInt vs toFixed vs tilde vs bitwise

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36
Chrome 108
Windows
Desktop
2 years ago
Test name Executions per second
parseInt 28.6 Ops/sec
toFixed 28.5 Ops/sec
Tilde 33.3 Ops/sec
Bitwise 33.1 Ops/sec
Math.round 30.9 Ops/sec
Math.trunc 29.6 Ops/sec
HTML Preparation code:
AخA
 
1
<div id="num"></div>
Script Preparation code:
 
var el = document.getElementById('num');
Tests:

  • parseInt

     
    var decimal = 30.0;
    for (var i = 0; i < 10000; i++) {
      decimal += (i / 1000);
      el.innerHTML = parseInt(decimal, 10);
    }

  • toFixed

     
    var decimal = 30.0;
    for (var i = 0; i < 10000; i++) {
      decimal += (i / 1000);
      el.innerHTML = decimal.toFixed();
    }

  • Tilde

     
    var decimal = 30.0;
    for (var i = 0; i < 10000; i++) {
      decimal += (i / 1000);
      el.innerHTML = ~~decimal;
    }

  • Bitwise

     
    var decimal = 30.0;
    for (var i = 0; i < 10000; i++) {
      decimal += (i / 1000);
      el.innerHTML = decimal | 0;
    }

  • Math.round

     
    var decimal = 30.0;
    for (var i = 0; i < 10000; i++) {
      decimal += (i / 1000);
      el.innerHTML = Math.round(decimal);
    }

  • Math.trunc

     
    var decimal = 30.0;
    for (var i = 0; i < 10000; i++) {
      decimal += (i / 1000);
      el.innerHTML = Math.trunc(decimal);
    }