javascript - single page login system using ajax and pdo -


i want make login system without page refreshing using ajax , pdo. because im planning make single page website people can login , go profile using show , hide javascript only.

my problem when press login button nothing happens.

index.php

<?php include_once('myincludes.php'); ?> <html lang="en"> <head> <script src="bootstrap/js/jquery-1.11.0.min.js"></script> <script type="text/javascript"> $(document).ready(function () {    $('#login').click(function (e) {        e.preventdefault();         var emptyfieldsuser = $('#user').filter(function () { return this.value === '' });        var emptyfieldspass = $('#pass').filter(function () { return this.value === '' });        if (emptyfieldsuser.length) && (emptyfieldspass.length) {            alert("try again");        } else {            var data = {};            data.user_text = $('#user').val();            data.pass_text = $('#pass').val();             $.ajax({                type: "post",                url: "user.php",                data: data,                cache: false,                success: function (response) {                    alert("login sccessfully!");                }             });         }     }); }); </script> </head> <body>     <form method="post">             username: <input type="text" name="user" id="user" /><br />         password: <input type="text" name="pass" id="pass" /><br />         <button type="submit" name="login" id="login">login</button>     </form> </body> </html>

myincludes.php

<?php  session_start(); include_once('connection.php'); include_once('user.php'); if(isset($_post['submit'])){     $user = $_post['user'];     $pass = $_post['pass'];     $object = new user();     $object->login($user, $pass); } ?>

user.php

<?php include_once('connection.php'); class user{      private $db;      public function __construct(){         $this->db = new connection();         $this->db = $this->db->dbconnect();     }     public function login($user, $pass){         if(!empty($user) && !empty($pass)){             $st = $this->db->prepare("select * users username=? , password=?");             $st->bindparam(1, $user);             $st->bindparam(2, $pass);             $st->execute();              if($st->rowcount() == 1){                 echo "user verifies, access granted";             } else {                 echo "incorrect username or password";             }         }else{             echo "please enter username , password";         }     } } ?>

connection.php

<?php class connection{     public function dbconnect(){         return new pdo('mysql:host=localhost; dbname=test', 'root', '');     } } ?>

you have syntax error in javascript:

if (emptyfieldsuser.length) && (emptyfieldspass.length) {                           ^ if closed here

and want or instead of and, negating conditions:

if (!emptyfieldsuser.length || !emptyfieldspass.length) {

in php have problems:

  • you not sending submit button check post should check 1 of 2 values sending or use if ($_server['request_method'] === 'post');
  • your post variables $_post['user_text']; , $_post['pass_text']; setting keys in ajax function.

also note when reach javascript success function, not mean login successful. means php script ran successfully. should use response back.


Comments

Post a Comment

Popular posts from this blog

inversion of control - Autofac named registration constructor injection -

does autofac support specifying registration name in components' constructors? example: ninject's namedattribute . you need use autofac.extras.attributed package on top achieve this so let's have 1 interface , 2 classes: public interface ihello { string sayhello(); } public class englishhello : ihello { public string sayhello() { return "hello"; } } public class frenchhello : ihello { public string sayhello() { return "bonjour"; } } then have consumer class, in want select instance injected: public class helloconsumer { private readonly ihello helloservice; public helloconsumer([withkey("en")] ihello helloservice) { if (helloservice == null) { throw new argumentnullexception("helloservice"); } this.helloservice = helloservice; } public string sayhello() { return this.helloservice.sayhello()...
Read more

ios - Change Storyboard View using Seague -

i have following code checks connection server, , depending on want change views if no connection found. nsstring *connect = [nsstring stringwithcontentsofurl:[nsurl urlwithstring:@"http://myserver.com"] encoding:nsutf8stringencoding error:nil]; if (connect == null) { [self performseguewithidentifier:@"network_failure" sender:self]; } else { // other code here } my problem not change views. have added storyboard segue between 2 views identifier of network_failure . not have navigation controller or that, problem? thanks help! no not problem. first of all, in objectivec exists nil object oriented null . must use that. so: if(connect == nil) or better: if(!connect) so due fact nil not same of null , probably code does't enter in if scope . you have been able discover breakpoint. anyway: be sure set trigger segue (line) 2 view controller , , name network_failure (that not best name. should instead view1toview2 ) as, m...
Read more

verilog - Systemverilog dynamic casting issues -

i've code snippet following in testbench function void write_to_port( my_data_type_base data ); my_data_type_extended data_ext; if(!$cast(data_ext, data)); `uvm_error(get_type_name(), "failed cast"); `uvm_info(get_name(), $psprintf("data_ext :\n%s", data_ext.sprint()), uvm_medium) // write data_ext out port.... endfunction when run it, i'm getting uvm_error "failed cast." i'm not quire sure why $cast not returning 1. can see, i'm printing out extended class data item after casting uvm_info. can see it's being cast properly. if don't use $cast if condition, don't runtime error. isn't coding practice use if dynamic cast check if $cast returning 1 ? what might reason behind cast not returning 1 in above case? i think semicolon on line 'if' not belong? i think consumes if statement, , uvm_error executes regardless of how if evaluates: if(!$cast(data_ext, data)); <- no semico...
Read more