Run results for: RegEx.test vs. String.includes vs. String.match vs == .slice - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser: Chrome 116

Operating system: Windows

Device Platform: Desktop

Date tested: 8 months ago

Test name	Executions per second
RegEx.test	5937164.0 Ops/sec
String.includes	12110610.0 Ops/sec
String.match	2284090.0 Ops/sec
==	18854460.0 Ops/sec
=== known length	18980020.0 Ops/sec
startsWith	16233770.0 Ops/sec

Website performance monitoring

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")