doutuosai3504 2019-05-15 03:57
浏览 283
已采纳

匹配在数据库中获取的用户名和密码 - Jquery [复制]

This question already has an answer here:

I need to match my username and password that is fetch in the database. right now the problem is I cannot match the username and password like the image you see below:

enter image description here

here is my code below:

HTML

    <body>  
          <div class="container box">  
           <div class="form-group">  
            <h3 align="center">Live Username Available or not By using PHP Ajax Jquery</h3><br />  
            <label>Enter Username</label>  
            <input type="text" name="username" id="username" class="form-control" />
            <input type="password" name="password" id="password" class="form-control" />


            <span id="availability"></span>
            <br /><br />
            <button type="button" name="register" class="btn btn-info" id="register" disabled>Register</button>
            <br />
           </div>  
           <br />  
           <br />  
          </div>  
  </body>  

jQuery script - this is where the match availability will show after the username and password is match or mismatched

<script>  
 $(document).ready(function(){  
  $('#username, #password').blur(function(){

    var username = $('#username').val();
    var password = $('#password').val();

     $.ajax({
      url:'check.php',
      method:"POST",
      data:{user_name:username, password:password},
      success:function(data)
      {
        console.log(data);
       if(data != '0')
       {
        $('#availability').html('<span class="text-danger">Username and Password not Match</span>');
        $('#register').attr("disabled", true);
       }
       else
       {
        $('#availability').html('<span class="text-success">Username and Password Available</span>');
        $('#register').attr("disabled", false);
       }

      }

     })

  });
 });  
</script>

check.php - database connection and query

  <?php  
    //check.php  
    $connect = mysqli_connect("localhost", "username", "", "dbname"); 
    if(isset($_POST["user_name"], $_POST["password"]))
    {
     $username = mysqli_real_escape_string($connect, $_POST["user_name"]);
     $password = mysqli_real_escape_string($connect, $_POST["password"]);
     $query = "SELECT * FROM admin WHERE username = '".$username."' AND password = '".$password."' ";
     $result = mysqli_query($connect, $query);
     echo mysqli_num_rows($result);
    }
 ?>
</div>
  • 写回答

3条回答 默认 最新

  • douqiao4450 2019-05-15 05:59
    关注

    I think your condition is wrong in the client end script. If username and password matched then it will return value which is greater than 0 . In that case, your code should be

    success:function(data)
      {
        console.log(data);
        if(data == 0)
        {
          $('#availability').html('<span class="text-danger">Username and Password not Match</span>');
          $('#register').attr("disabled", true);
        } 
        else
        {
          $('#availability').html('<span class="text-success">Username and Password Available</span>');
          $('#register').attr("disabled", false);
        }
       }
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(2条)

报告相同问题?

悬赏问题

  • ¥60 版本过低apk如何修改可以兼容新的安卓系统
  • ¥25 由IPR导致的DRIVER_POWER_STATE_FAILURE蓝屏
  • ¥50 有数据,怎么建立模型求影响全要素生产率的因素
  • ¥50 有数据,怎么用matlab求全要素生产率
  • ¥15 TI的insta-spin例程
  • ¥15 完成下列问题完成下列问题
  • ¥15 C#算法问题, 不知道怎么处理这个数据的转换
  • ¥15 YoloV5 第三方库的版本对照问题
  • ¥15 请完成下列相关问题!
  • ¥15 drone 推送镜像时候 purge: true 推送完毕后没有删除对应的镜像,手动拷贝到服务器执行结果正确在样才能让指令自动执行成功删除对应镜像,如何解决?