Run results for: parseInt vs toFixed vs tilde vs bitwise

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Tilde

195/s

Bitwise

195/s

Math.trunc

177/s

parseInt

175/s

Math.round

174/s

toFixed

162/s

View exact numbers

HTML Preparation code:

<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); }