locutus/php/var/isset.js

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

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isset = isset;
function isset(...values) {
    //  discuss at: https://locutus.io/php/isset/
    // original by: Kevin van Zonneveld (https://kvz.io)
    // improved by: FremyCompany
    // improved by: Onno Marsman (https://twitter.com/onnomarsman)
    // improved by: Rafał Kukawski (https://blog.kukawski.pl)
    //   example 1: isset( undefined, true)
    //   returns 1: false
    //   example 2: isset( 'Kevin van Zonneveld' )
    //   returns 2: true
    if (values.length === 0) {
        throw new Error('Empty isset');
    }
    for (const value of values) {
        if (typeof value === 'undefined' || value === null) {
            return false;
        }
    }
    return true;
}