Redirect to url parameter URL via javascript

javascriptRedirect.js

function getQueryParams(qs) {
    qs = qs.split('+').join(' ');

    var params = {},
        tokens,
        re = /[?&]?([^=]+)=([^&]*)/g;

    while (tokens = re.exec(qs)) {
        params[decodeURIComponent(tokens[1])] = decodeURIComponent(tokens[2]);
    }

    return params;
}
//file:///C:/Users/OscarA/Desktop/getAjax.html?url=http://www.google.com?id=52435325
var query = getQueryParams(document.location.search);
console.log(query.url);
window.location = query.url;