Benchmark: Test "new RegExp(string)" vs "new RegExp(/regexp/)" vs "/regexp/"

Script Preparation code:

var string = "Hello world!";
var regexA = /Hello/;
var regexB = new RegExp("Hello", 'gi');
var regexC = new RegExp(/Hello/, 'gi');
var regexD = () => new RegExp(/Hello/, 'gi')

Tests:

regexA.test
regexA.test(string);
regexB.test
regexB.test(string);
regexC.test
regexC.test(string);
regexD.test
regexD().test(string);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
regexA.test
regexB.test
regexC.test
regexD.test

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 10 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Linux

View result in a separate tab

Test name	Executions per second
regexA.test	11711940.0 Ops/sec
regexB.test	12568360.0 Ops/sec
regexC.test	9527319.0 Ops/sec
regexD.test	2774373.0 Ops/sec

Test "new RegExp(string)" vs "new RegExp(/regexp/)" vs "/regexp/" (version: 0)

Comparing performance of: regexA.test vs regexB.test vs regexC.test vs regexD.test

Created: 10 months ago by: Guest

Jump to the latest result

regexA.test

regexB.test

regexC.test

regexD.test

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A