Simple location.hash parser

param.js

/**
 * url hash manager
 * @author Victor N <victornunes@lett.digital> 
 */
const param = (function HashParams() {
    function parse(string) {
        var params = {};
        string.replace(/^[#?]/, '').split('&').forEach(text => {
            var p = text.split('=');
            var key = decodeURIComponent(p[0]);
            var value = decodeURIComponent(p[1]);
            if(key) params[key] = value;
        });
        return params;
    }
    function serialize(obj) {
        var p, arr = [];
        for (p in obj) {
            if (!Object.prototype.hasOwnProperty.call(obj, p)) continue;
            arr.push(encodeURIComponent(p) + '=' + encodeURIComponent(obj[p]));
        }
        return arr.join('&');
    }
    return {
        getAll: function () {
            return parse(location.hash);
        },
        setAll: function (obj) {
            location.hash = serialize(obj);
        },
        set: function (key, val) {
            var obj = parse(location.hash);
            if (val === undefined) delete obj[key];
            else obj[key] = val;
            location.hash = serialize(obj);
        },
        get: function (key) {
            return parse(location.hash)[key];
        }
    };
})();