Problem getting the response from php in a new location.

Question

Currently the location of my Html is http://severname.com/qotw.html. Onclick of a button i call the login();

the login() javascript function, looks like this:

function login()
{  
  passwrd = document.f_signin.password.value;
  username = document.f_signin.username.value;

  if (username==""){ document.getElementById("response").innerHTML="<font color='red'>Enter your User Name to login.</font>";}
  else if (passwrd==""){ document.getElementById("response").innerHTML="<font color='red'>You did not enter your password. Enter your password and try again.</font>";}

  if (passwrd!="" && username!="")
  {    
    xmlhttp=GetXmlHttpObject();
    //alert("pass");
    if(xmlhttp==null)
    {
      alert("Your browser does not support AJAX!");
      return;
    }
    var url="login.php";
    url=url+"?id="+username+"&passwrd="+passwrd;
    xmlhttp.onreadystatechange=statechangedLogin;
    xmlhttp.open("GET", url, true);
    xmlhttp.send(null);
  }
}

function statechangedLogin()
{
  //alert(xmlhttp.readyState);
  if(xmlhttp.readyState==4)
  {
    if(xmlhttp.responseText=="<font color='red'>Your User Name or Password is incorrect. Please try again.</font>")
    {
      document.getElementById("response").innerHTML=xmlhttp.responseText;
    }
    else 
    {
      document.location="http://servername.com/login.php";
      //document.getElementById("mainbody").
      document.innerHTML=xmlhttp.responseText;
    }
  }
}

I want to display the response from login.php in the location "http://severname.com/login.php"

How should i do this? The location of the page changes from qotw.html to login.php, but the login.php does not displays anything inside it.

Zeeshan

Answer 1

With

document.location="http://servername.com/login.php";

you advise the browser to request another document from the given url. This new document will replace the current document and your javascript "within" the current document cannot affect the new document (any more).
You're probably setting a cookie to keep track of the session. Why not simply redirect to login.php and have that script check the cookie. If it's a valid session just print something like

You are currently logged in as userXYZ

?