php - How can I process this fail? -


file html:

<div id="background">     <div class="form-group">         <label for="usr" style="position:fixed;margin-top:180px;margin-left:900px;"><u>account id</u>:</label>         <form action="processlogin.php" method="post" onsubmit="return process_login()">         <input type="text" placeholder="enter id in here" class="form-control" id="usr" name="idcuaban" style="position:absolute;width:350px;margin-top:205px;margin-left:900px;">               </div>     <div class="form-group">         <label for="pwd" style="position:fixed;margin-top:230px;margin-left:900px;"><u>pin</u>:</label>         <input type="password" placeholder="enter pin in here" class="form-control" id="pwd" name="passcuaban" style="position:absolute;width:350px;margin-top:255px;margin-left:900px;">         <button type="submit" class="btn btn-default" style="font-weight:bold;font-family:tahoma, geneva, sans-serif;position:fixed;margin-left:1040px;margin-top:310px;width:100px;">login</button>         <button type="submit" class="btn btn-default" style="font-weight:bold;font-family:tahoma, geneva, sans-serif;position:absolute;margin-left:1150px;margin-top:310px;width:100px;">sign up</button>          </form>        </div> </div> 

function process_login():

function process_login(){         var c = document.getelementbyid("usr").value;         var d = document.getelementbyid("pwd").value;         if(c.length==0){             alert("error: id account null");             return false;         }         else if(isnan(c)){             alert("error: id must number");             return false;         }         return true;      } 

file processlogin.php:

<?php $user = $_post["idcuaban"]; $pass = $_post["passcuaban"]; //connect server $con = mysql_connect("localhost", "root", ""); if(!$con){     die("cound not connect"); } //select database mysql_select_db("db_atmvisual"); $query = mysql_query("select * tb_account account_id='$user' , account_pin='$pass'"); $row = mysql_num_rows($query); if($row!=0){     echo "login sucess"; } else     //header('location:http://loginfail.html');     echo "login fail";?> 

it's quite difficult describe problem, have 2 files, 1 file .html , 1 file .php, when click button "login", it'll connect mysql process , return result, when try click button login, it's show nothing page, not return result. yesterday, it's ok don't understand wrong it?


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