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Run results for:
Fastest way to detect an empty string - better test cases
testing removing beginning and end whitespace vs trim
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<iframe src="https://measurethat.net/Embed?id=591895" 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/134.0.0.0 Safari/537.36
Browser:
Chrome 134
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
trimStart
10.0M/s
trim
9.4M/s
trimEnd
8.8M/s
regex
5.6M/s
View exact numbers
Test name
Executions per second
✓
trimStart
10,001,834 Ops/sec
trim
9,394,265 Ops/sec
trimEnd
8,820,145 Ops/sec
regex
5,604,554 Ops/sec
Script Preparation code:
var strings = [' ', ' a', 'a ', ' a '];
Tests:
regex
strings.filter(s=>/^\s+$/.test(s));
trim
strings.filter(s=>!s.trim())
trimStart
strings.filter(s=>s.trimStart())
trimEnd
strings.filter(s=>s.trimEnd())