Run results for: str.charAt(0).toLowerCase() vs str.toLowerCase()

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

toLowerCase()

131.6M/s

str.charAt(0).toLowerCase()

74.3M/s

View exact numbers

Test name	Executions per second
✓ toLowerCase()	131,607,240 Ops/sec
str.charAt(0).toLowerCase()	74,344,128 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

var str = 'myTestWord'

Tests: