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/103.0.0.0 Safari/537.36

Browser: Chrome 103

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
regexp .test()	10264420.0 Ops/sec
string .match()	8592435.0 Ops/sec
indexOf === 0	15894030.0 Ops/sec
string .startsWith()	11368540.0 Ops/sec
regexp .test() failure	10728140.0 Ops/sec
string .match() failure	8215055.0 Ops/sec
indexOf === 0 failure	16321070.0 Ops/sec
string .startsWith() failure	11727640.0 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://')