Run results for: Capitalize first char of a string 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36

Browser: Chrome 69

Operating system: Mac OS X 10.14.0

Device Platform: Desktop

Date tested: 5 years ago

HTML Preparation code:


<script src=''></script>

Script Preparation code:

var lower = 'this is an entirely lowercase string';

Tests:

charAt
var upper = lower.charAt(0).toUpperCase() + lower.substr(1);
anon function
const upper = lower.replace(/^\w/, c => c.toUpperCase());
function
var upper = lower.replace(/^\w/, function (chr) { return chr.toUpperCase(); });
charAt + slice
var upper = lower.charAt(0).toUpperCase() + lower.slice(1);