Run results for: toUpperCase vs toLowerCase - true

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0

Browser: Firefox 131

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

toLowerCase

896.6M/s

toUpperCase

861.7M/s

View exact numbers

Test name	Executions per second
✓ toLowerCase	896,617,984 Ops/sec
toUpperCase	861,684,160 Ops/sec

Script Preparation code:

var text = 'SOME ARE UPPER some are lower';

Tests: