在服务器端修改数据库xz数据 xz_user 的姓名，电话，邮箱，性别

表单

<form action='/update' method='post'>
  <h3> 修改用户</h3>
编号：<input type='text' name='uid'><br>
真名：<input type='text' name='user_name'><br>
性别：<input type='text' name='gender'><br>
电话:<input type='text' name='phone'><br>
邮箱：<onput type='text' name='email'><br>
<input type='submit'>
</form>

js文件

//修改用户
router.post('/update',(req,res)=>{
  //拿到客户端数据，分别检测数据
  var $uid = req.body.uid;
  if(!$uid){
    res.send({code:401,msg:'uid required'});
   return;
   };
  var $user_name = req.body.user_name;
  if(!$user_name){
     res.send({code:402,msg:'user_name required'});
     return;
  };
  var $gender = req.body.gender;
  if(!$gender){
     res.send({code:403,msg:'gender required'});
     return;
   };
   var $phone = req.body.phone;
   if(!$phone){
     res.send({code:404,msg:'phone required'});
     return; 
   };
var $email = req.body.email;
   if(!$email){
     res.send({code:404,msg:'email required'});
     return; 
   };
  var sql = `update xz_user set user_name=?,gender=?,phone=?,email=? where uid=?`;
  pool.query(sql,[$user_name,$gender,$phone,$email],(err,result)=>{
    if(err) throw err;
    res.send({code:200,msg:'success'});
  });
});