Convert a string (location.hash) into an object.

hashToObject.js

/**
 * convert string (hash) to object
 * @param {string} hash 
 * @returns {object}
 */
function hashToObject(hash) {
    let obj = {};
    hash = hash.slice(1);
    let params = hash.split(',');
    params.forEach(param => {
        if (!param) return;
        param = param.split('=');
        obj[param[0]] = param[1];
    });

    return obj;
}

// demo
let hash = '#id=123,lang=de,,user=test';
console.log(hashToObject(hash));