Run results for: check navigator.language v4 - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36

Browser: Chrome 109

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
indexOf()	2267567.8 Ops/sec
substr()	2217744.5 Ops/sec
test()	1870803.1 Ops/sec
=== \|\| ===	1080443.2 Ops/sec
substring()	2288099.2 Ops/sec
===	2528682.8 Ops/sec
test() 2	2091439.6 Ops/sec

Tests:

indexOf()
!navigator.language.indexOf('ru')
substr()
'ru'===navigator.language.substr(0,2)
test()
/^ru/.test(navigator.language)
=== || ===
navigator.language==='ru'||navigator.language==='ru-RU'
substring()
'ru'===navigator.language.substring(0,2)
===
navigator.language==='ru-RU'
test() 2
/^ru-?/.test(navigator.language)