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Run results for:
Capitalize
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<iframe src="https://measurethat.net/Embed?id=514533" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 Edg/122.0.0.0
Browser:
Chrome 122
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
5
90.0M/s
3
89.0M/s
1
88.1M/s
2
20.7M/s
4
4.9M/s
View exact numbers
Test name
Executions per second
✓
5
90,013,680 Ops/sec
3
88,998,792 Ops/sec
1
88,101,736 Ops/sec
2
20,666,122 Ops/sec
4
4,939,369 Ops/sec
Tests:
1
function capitalizeFirstLetter(string) { return string.charAt(0).toUpperCase() + string.slice(1); } capitalizeFirstLetter('string');
2
function capitalizeFirstLetter(string) { return string.replace(/^./, string[0].toUpperCase()); } capitalizeFirstLetter('string');
3
function capitalizeFirstLetter(string) { return string[0].toUpperCase() + string.slice(1); } capitalizeFirstLetter('string');
4
String.prototype.capitalizeFirstLetter = function() { return this.charAt(0).toUpperCase() + this.slice(1); } 'string'.capitalizeFirstLetter();
5
function capitalizeFirstLetter(s) { return s[0].toUpperCase() + s.substr(1); } capitalizeFirstLetter('string');