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Run results for:
Find substring in a long string
Benchmark finding a string in a substring via several methods.
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<iframe src="https://measurethat.net/Embed?id=567349" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0
Browser:
Firefox 132
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
IndexOf
2211.9M/s
Includes
2114.7M/s
test (regex)
36.3M/s
View exact numbers
Test name
Executions per second
✓
IndexOf
2,211,938,048 Ops/sec
Includes
2,114,672,384 Ops/sec
test (regex)
36,263,584 Ops/sec
Script Preparation code:
var string = 'test:segment:foo-bar:EBAC7R$MTVEQV3$GWF2WF2-2025@20240902:lorem-ipsum:v1:85136c79cbf9fe36bb9d05d0639c70c265c18d37'
Tests:
IndexOf
string.indexOf(':foo-bar:')
Includes
string.includes(':foo-bar:')
test (regex)
pattern = /:foo-bar:/ pattern.test(string)