Run results for: * 10, round vs trunc vs floor vs parseFloat vs ~~ vs 0 | vs parseInt vs parseInt, 10

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:121.0) Gecko/20100101 Firefox/121.0

Browser: Firefox 121

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

Test name

Executions per second

✓ ~~

736,113,344 Ops/sec

parseInt, 10

735,431,360 Ops/sec

trunc

735,354,688 Ops/sec

0 |

733,890,624 Ops/sec

floor

733,820,800 Ops/sec

parseInt

733,546,688 Ops/sec

round

733,336,192 Ops/sec

parseFloat to int

9,117,106 Ops/sec

Tests:

trunc
const x = Math.trunc(12.34 * 10); const y = Math.trunc(567.89 * 10);
round
const x = Math.round(12.34 * 10); const y = Math.round(567.89 * 10);
floor
const x = Math.floor(12.34 * 10); const y = Math.floor(567.89 * 10);
parseFloat to int
const x = parseFloat((12.34 * 10).toFixed()); const y = parseFloat((567.89 * 10).toFixed());
~~
const x = ~~(12.34 * 10); const y = ~~(567.89 * 10);
0 |
const x = (0 | 12.34 * 10); const y = (0 | 567.89 * 10);
parseInt
const x = parseInt(12.34 * 10); const y = parseInt(567.89 * 10);
parseInt, 10
const x = parseInt(12.34 * 10, 10); const y = parseInt(567.89 * 10, 10);