locutus/perl/core/ucfirst.js

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

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ucfirst = ucfirst;
function ucfirst(str) {
    //      discuss at: https://locutus.io/perl/ucfirst/
    // parity verified: Perl 5.40
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //       example 1: ucfirst('hello')
    //       returns 1: 'Hello'
    //       example 2: ucfirst('hELLO')
    //       returns 2: 'HELLO'
    const value = String(str);
    if (!value) {
        return '';
    }
    return value.charAt(0).toUpperCase() + value.slice(1);
}