exports.adduser = function(db) { return function(req, res) { // Get our form values. These rely on the "name" attributes var userName = req.body.username; var userEmail = req.body.useremail; var collection = db.get('users'); var llll = collection.insert({ "userid": userName, "password": userEmail, }) if (llll) { res.location('http://baidu.com'); } else { res.send("error") } } };

資料庫是插入成功的，但是不會正確跳轉至到百度
報錯是　500 TypeError: res.location is not a function

這是什麼原因？