1.login.js实现form框架
<form >
<ul>
<li><p>用户名</p></li>
<li><input type="text" name="username" id="username"></li>
</ul>
<ul>
<li><p>密码</p></li>
<li><input type="password" name="password" id="password"></li>
</ul>
<ul class="mt50">
<li><input id="login_submit" class="submit" type="button" value="登 陆"></li>
</ul>
</form>
2.js实现request的发送
$("#login_submit").click(function(){
var username=$('#username').val();
var password=$('#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://localhost: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{ }
}
});
});
3.后台接收
/** * 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"});
}
});
});