Javascript 如何使用node.js mongodb express.js为登录和注册创建简单的restful api

如何使用node.js、express.js和mongo db创建restful api。我需要如何编写登录和注册页面的模式，以及如何使用nodejs express js将数据与mongodb进行比较

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我是nodejs的初学者，请帮我举一些例子。

这可能会帮助你，谢谢@Shekar Tyagi

    //the simple example of login// 

        router.post('/users/login', function (req, res) {
            var users = req.app;
            var email = req.body.email;
            var password = req.body.password;
            if (email.length > 0 && password.length > 0) {
                users.findOne({email: email, password: password}, function (err, user) {
                    if (err) {
                        res.json({status: 0, message: err});
                    }
                    if (!user) {
                        res.json({status: 0, msg: "not found"});
                    }
                    res.json({status: 1, id: user._id, message: " success"});
                })
            } else {
                res.json({status: 0, msg: "Invalid Fields"});
            }
        });

    //and if you have to create schema 

 var db_schema = new Schema({
                email: {type: String, required: true, unique: true},
                password: {type: String, required: true, unique: true},
            });
// define this in your db.js
      var login_db = mongoose.model('your_db_name', db_schema);
        return function (req, res, next) {
                req.app = login_db;
                next();
            };