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Run results for:
String split('.')[0] + 'Z' vs slice(0,19) + 'Z' for ISO date
Comparing split vs slice for stripping milliseconds from toISOString() output. Common pattern in date formatting utilities.
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=626490" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Android 15; Mobile; rv:148.0) Gecko/148.0 Firefox/148.0
Browser:
Firefox Mobile 148
Operating system:
Android
Device Platform:
Mobile
Date tested:
6 months ago
Benchmark engine:
Benchmark.js
slice(0, 19) + Z
1156.6M/s
split()[0] + Z
7.5M/s
View exact numbers
Test name
Executions per second
✓
slice(0, 19) + Z
1,156,561,792 Ops/sec
split()[0] + Z
7,468,876 Ops/sec
HTML Preparation code:
<!--your preparation HTML code goes here-->
Script Preparation code:
var isoDate = new Date('2024-07-04T18:00:00.999Z').toISOString();
Tests:
split()[0] + Z
var result = isoDate.split('.')[0] + 'Z';
slice(0, 19) + Z
var result = isoDate.slice(0, 19) + 'Z';