url-parameters-to-object.js

function locationParams(specific, value) {
    var result = {},
        loc = location.search.length ? location.search.slice(1).split('&') : null;
    if (loc) {
        loc.forEach(function (item) {
            item = item.split('=');
            if (item.length > 1 && item[0] && item[1]) result[item[0]] = item[1];
        });
        result = !value && specific && specific in result ? result[specific] : result;
    }
    if (typeof result === 'object' && !Object.keys(result).length || typeof result === 'string' && !result.length) {
        result = {};
    }
    if (typeof value !== 'undefined') {
        var string = '?';
        result[specific] = value;
        Object.keys(result).forEach(function (key) {
            string += key+'='+result[key]+'&';
        });
        result = string.slice(0, -1);
    }
    return result;
}