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Run results for:
RegEx.test vs. String.includes vs. String.match vs == .slice
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<iframe src="https://measurethat.net/Embed?id=598875" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36
Browser:
Chrome 134
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
==
185.7M/s
String.includes
179.8M/s
=== known length
179.3M/s
startsWith
92.5M/s
RegEx.test
52.8M/s
String.match
10.6M/s
View exact numbers
Test name
Executions per second
✓
==
185,725,104 Ops/sec
String.includes
179,769,120 Ops/sec
=== known length
179,321,760 Ops/sec
startsWith
92,484,744 Ops/sec
RegEx.test
52,750,816 Ops/sec
String.match
10,607,238 Ops/sec
Script Preparation code:
var string = "Hello world!"; var regex = /Hello/;
Tests:
RegEx.test
regex.test(string);
String.includes
string.includes("Hello");
String.match
string.match("Hello");
==
"Hello" == string.slice(0, "Hello".length);
=== known length
string.slice(0, 5) === "Hello"
startsWith
string.startsWith("Hello")