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

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36 OPR/95.0.0.0

Browser: Opera 95

Operating system: Windows 7

Device Platform: Desktop

Date tested: 3 days ago

Test name	Executions per second
regexp .test()	2664296.0 Ops/sec
string .match()	2427510.0 Ops/sec
indexOf === 0	5299471.0 Ops/sec
string .startsWith()	3358415.0 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('http://') === 0
string .startsWith()
html.startsWith('https://')