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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
regexp .test()	11302570.0 Ops/sec
string .match()	9916723.0 Ops/sec
indexOf === 0	17635466.0 Ops/sec
string .startsWith()	11596054.0 Ops/sec
equals	18201072.0 Ops/sec

Script Preparation code:

var html = "https://";

Tests:

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

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