locutus/esm/php/strings/ucfirst.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

export function ucfirst(str) {
    //      discuss at: https://locutus.io/php/ucfirst/
    // parity verified: PHP 8.3
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
    //     improved by: Brett Zamir (https://brett-zamir.me)
    //       example 1: ucfirst('kevin van zonneveld')
    //       returns 1: 'Kevin van zonneveld'
    str += '';
    const f = str.charAt(0).toUpperCase();
    return f + str.substr(1);
}