handle jquery ajax redirect

 

I'm making a $.get to call a service 'A'. Service 'A' returns plain text which I display on the page. But sometimes it redirects to service 'B' which returns plain text. But, I'm unable to handle the response text of service 'B'. How do I do that?

I can not prove, but I hope that this script can guide you to a solution:

you would have to prove your status differences or text on each type of response from "a.php" 

$.ajax({
  type: "GET",
  url: "a.php",
  complete: function (XMLHttpRequest, textStatus) {
     if (XMLHttpRequest.status!=200) // or responseText 
     { 
       var fn = arguments.callee;
       var _this = this;
       setTimeout(function(){fn.call(_this, XMLHttpRequest, textStatus);}, 200);
     }
     else
     {
       //ok
     }
  }
});

or EDIT: 

  complete: function xCompleteFunction(XMLHttpRequest, textStatus) {
     if (XMLHttpRequest.status!=200) // or responseText 
     { 
       var _this = this;
       setTimeout(function(){xCompleteFunction.call(_this, XMLHttpRequest, textStatus);}, 200);
     }
     else
     {
       //ok
     }
  }

function call to itself

EDIT II:

redirect.html: 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script> 
<title></title>
<script type="text/javascript">
$(function(){
    $("#senddata").click(function(){
        $.ajax({
            type: "GET",
            url: "a.php",
            complete: function xCompleteFunction(XMLHttpRequest, textStatus) {
                $("#info").append(""+XMLHttpRequest.status+"<br />"+XMLHttpRequest.responseText+"<br>");
                if (XMLHttpRequest.status==301) // or responseText 
                { 
                    var _this = this;
                    setTimeout(function(){xCompleteFunction.call(_this, XMLHttpRequest, textStatus);}, 200);
                    $("#info").append("waiting redirect<br>");
                }
                else
                {
                    $("#info").append("redirect ok<br>");
                }
            }
        });
    });
});
</script>
</head>
<body>
<button id="senddata">send ajax request</button>
<pre id="info"></pre>
</body>
</html>

a.php: 

<?php
for($a=0;$a<1000000;$a++)
{
    //wait
}
header('Location: b.php');

b.php: 

<?php
    print "hola mundo";

Important: Status Code Definitions

You cannot do this in javascript. You can change your server-side behaviour.

The silent (transparent) redirection is the part of XMLHttpRequest specification (see here especially the words "... transparently follow the redirect ..."). The standard mention only that the user agent (the web browser) can prevent or notify of certain kinds of automatic redirections, but it's not a part of XMLHttpRequest. It's the part of HTTP client configuration (OS configuration) or the web browser configuration

如果服务B在不同的域中侦听，那么这种跨域AJAX调用是被禁止的，除非crossdomain.xml文件允许它。

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