locutus/esm/php/math/decbin.js

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

export function decbin(number) {
    //      discuss at: https://locutus.io/php/decbin/
    // parity verified: PHP 8.3
    //     original by: Enrique Gonzalez
    //     bugfixed by: Onno Marsman (https://twitter.com/onnomarsman)
    //     improved by: https://stackoverflow.com/questions/57803/how-to-convert-decimal-to-hex-in-javascript
    //        input by: pilus
    //        input by: nord_ua
    //       example 1: decbin(12)
    //       returns 1: '1100'
    //       example 2: decbin(26)
    //       returns 2: '11010'
    //       example 3: decbin('26')
    //       returns 3: '11010'
    let normalized = parseInt(String(number), 10);
    if (normalized < 0) {
        normalized = 0xffffffff + normalized + 1;
    }
    return normalized.toString(2);
}