Why Javascript variable not working?

[moin1407]

HI

Why found variable not working properly in if statement?
The found variable working properly in if ( user.length < 6 || user.length > 20 ) but not working in if(code <=0). why? i want to send found value via return at the end of the function username_check()

please anyone resolve this.

function pullAjax(){
    var a;
    try{
      a=new XMLHttpRequest()
    }
    catch(b)
    {
      try
      {
        a=new ActiveXObject("Msxml2.XMLHTTP")
      }catch(b)
      {
        try
        {
          a=new ActiveXObject("Microsoft.XMLHTTP")
        }
        catch(b)
        {
          alert("Your browser broke!");return false
        }
      }
    }
    return a;
  }


  function username_check()
  {

	var found = 0;

    var x = document.getElementById('username');
    var username_msg = document.getElementById('username_msg');
    user = x.value;
 
    code = '';
    message = '';

    obj=pullAjax();
    obj.onreadystatechange=function()
    {

if ( user.length < 6 || user.length > 20 )
	{
          x.style.border = "2px solid red";
          username_msg.style.color = "red";
		  message = "Username contains min 6 and max 20 allowed characters";
          username_msg.innerHTML = message;
		  found = 1;   //This works properly
	}

      else if(obj.readyState==4)
      {
        eval("result = "+obj.responseText);
        code = result['code'];
        message = result['result'];
 
        if(code <=0)
        {
          x.style.border = "2px solid red";
          username_msg.style.color = "red";
          found = 1;     //This doesnt works and found value remain zero
        }
        else
        {
          x.style.border = "2px solid green";
          username_msg.style.color = "green";
        }
        username_msg.innerHTML = message;
      }
    
	}

    obj.open("GET",site_root+"username_check.php?username="+user,true);
    obj.send(null);
	
return found;
  }

[MarPlo]

Try to force code to be a number
var code = result['code'] * 1;
or
var code = parseFloat(result['code']);
or
if(code.length<=0)

[moin1407]

Hi

Thanks

These are not working also
actually code is variable which comes from username_check.php

Here is username_check.php

PHP Code:


<?php

$user = strip_tags(trim($_REQUEST['username']));
 
if(strlen($user) <= 0)
{
  echo json_encode(array('code'  =>  -1, 'result'  =>  'Invalid username, please try again.'));
  die;
}
 
    $link = mysql_connect('localhost', 'root', '');
    mysql_select_db('results', $link);

$query = mysql_fetch_array(mysql_query("Select * from `USERS` where username = '$user' "));
 
 
if( $query == "" )
{
  echo json_encode(array('code'  =>  1, 'result'  =>  "Success,username $user is still available"));
  die;
}
else
{
  echo  json_encode(array('code'  =>  0, 'result'  =>  "Sorry but username $user is already taken."));
  die;
}

?>