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String split('.')[0] + 'Z' vs slice(0,19) + 'Z' for ISO date
(version: 1)
Benchmark.js
Comparing split vs slice for stripping milliseconds from toISOString() output. Common pattern in date formatting utilities.
Comparing performance of:
split()[0] + Z vs slice(0, 19) + Z
Created:
6 months ago
by:
Guest
Go to the latest result
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';
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
split()[0] + Z
slice(0, 19) + Z
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
6 months ago
)
User agent:
Mozilla/5.0 (Android 15; Mobile; rv:148.0) Gecko/148.0 Firefox/148.0
Browser/OS:
Firefox Mobile 148 on Android
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=626490" width="100%" height="500px"></iframe>
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
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ISO-Date slice vs split
ISO Datetime - add microseconds - replace vs slice
string.split vs toLocaleDateString("pt-PT")
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