Run results for: .startsWith() vs .test() vs .match() vs .indexOf() with failures - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36 Edg/123.0.0.0

Browser: Chrome 123

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 20 days ago

Test name	Executions per second
regexp .test()	17450190.0 Ops/sec
string .match()	14155650.0 Ops/sec
indexOf === 0	26731630.0 Ops/sec
string .startsWith()	19714600.0 Ops/sec
regexp .test() failure	17556490.0 Ops/sec
string .match() failure	14471780.0 Ops/sec
indexOf === 0 failure	26399540.0 Ops/sec
string .startsWith() failure	19662740.0 Ops/sec

Website performance monitoring

Script Preparation code:

var html = "https://www.google.com";

Tests:

regexp .test()
/^https?:\/\//.test(html)
string .match()
!!html.match(/^https:\/\//)
indexOf === 0
html.indexOf('https://') === 0
string .startsWith()
html.startsWith('https://')
regexp .test() failure
/^https?:\/\//.test(html)
string .match() failure
!!html.match(/^https:\/\//)
indexOf === 0 failure
html.indexOf('https://') === 0
string .startsWith() failure
html.startsWith('https://')