node.js+jQuery实现用户登录注册AJAX交互方法

$("#login_submit").click(function(){

varusername=$('#username').val();

varpassword=$('#password').val();

//这里实现对 username和password格式的判断

//........

//发送ajax请求 使用post方式发送json字符串给后台login

$.ajax({

type:"post",

url:"http://*l*oca*lhost:3000/login",

dataType:"json",

data:{ username: username, password: password },

success:function(data){

//接受返回的数据，前端判断采取的动作

if(data){

if(data.message=="false"){

alert('密码错误，请重新输入');

window.location.href="login";

}else{

alert('登陆成功');

window.location.href="index";

}

}else{

}

}

});

});

/**

* 注册页 post

*/

router.post('/reg',function(req, res, next) {

//先查询有没有这个user

console.log("req.body"+req.body);

user2.findDocuments(DATABASE,"users", 1, {"uName":req.body.username},function(user) {

res.setHeader('Content-Type','application/json;charset=utf-8');

if(user.length==0){

//用户名没有重复 同意创建用户

user2.insertDocuments(DATABASE,"users",

[{

"uName":req.body.username,

"uPasswd":req.body.password,

"uEmail":req.body.email,

"uHasshop":0,

"uShopname":"null",

"aId":'-1'

}],

function(result){

res.send({status:"success", message:"true"});

}

);

}

else{

// 用户名重复。找到这个user 不同意创建用户

res.send({status:"success", message:"false"});

}

});

});