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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5.2 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.5.1

Device Platform: Mobile

Date tested: 7 days ago

Test name	Executions per second
regexp .test()	9193771.0 Ops/sec
string .match()	7630739.5 Ops/sec
indexOf === 0	8627350.0 Ops/sec
string .startsWith()	9556515.0 Ops/sec

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://')

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

regexp .test()

string .match()

indexOf === 0

string .startsWith()