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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

===

3.3M/s

indexOf()

3.3M/s

substr()

3.3M/s

substring()

3.2M/s

test()

2.8M/s

test() 2

2.8M/s

=== || ===

1.6M/s

View exact numbers

Test name	Executions per second
✓ ===	3,296,522 Ops/sec
indexOf()	3,278,089 Ops/sec
substr()	3,254,466 Ops/sec
substring()	3,239,415 Ops/sec
test()	2,844,087 Ops/sec
test() 2	2,750,311 Ops/sec
=== \|\| ===	1,624,196 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)