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Run results for:
* 10, round vs trunc vs floor vs parseFloat vs ~~ vs 0 | vs parseInt vs parseInt, 10 loop
fastest from float to int with multiplication
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36
Browser:
Chrome 121
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
|0
30K/s
~~
30K/s
round
7K/s
parseInt, 10
6K/s
trunc
6K/s
floor
6K/s
parseInt
6K/s
parseFloat to int
3K/s
View exact numbers
Test name
Executions per second
✓
|0
29,714 Ops/sec
~~
29,672 Ops/sec
round
6,523 Ops/sec
parseInt, 10
6,496 Ops/sec
trunc
6,495 Ops/sec
floor
6,455 Ops/sec
parseInt
6,399 Ops/sec
parseFloat to int
3,061 Ops/sec
Script Preparation code:
var count = 1000;
Tests:
trunc
for (var i = 0; i < count; i++) { Math.trunc(12.34 * 10); Math.trunc(567.89 * 10); }
round
for (var i = 0; i < count; i++) { Math.round(12.34 * 10); Math.round(567.89 * 10); }
floor
for (var i = 0; i < count; i++) { Math.floor(12.34 * 10); Math.floor(567.89 * 10); }
parseFloat to int
for (var i = 0; i < count; i++) { parseFloat((12.34 * 10).toFixed()); parseFloat((567.89 * 10).toFixed()); }
~~
for (var i = 0; i < count; i++) { ~~(12.34 * 10); ~~(567.89 * 10); }
|0
for (var i = 0; i < count; i++) { (12.34 * 10 |0); (567.89 * 10 |0); }
parseInt
for (var i = 0; i < count; i++) { parseInt(12.34 * 10); parseInt(567.89 * 10); }
parseInt, 10
for (var i = 0; i < count; i++) { parseInt(12.34 * 10, 10); parseInt(567.89 * 10, 10); }