# AJAX POST request not getting JSON results or any

**URL:** <https://forum.kirupa.com/t/ajax-post-request-not-getting-json-results-or-any/324813>\
**Category:** web dev\
**Created:** [September 10, 2011, 3:42am UTC](https://forum.kirupa.com/t/ajax-post-request-not-getting-json-results-or-any/324813 "2011-09-10T03:42:36Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![bear](https://avatars.discourse-cdn.com/v4/letter/b/ac8455/32.png) [@bear](https://forum.kirupa.com/u/bear)\
**Post date:** [September 10, 2011, 3:42am UTC](https://forum.kirupa.com/t/ajax-post-request-not-getting-json-results-or-any/324813/1 "2011-09-10T03:42:36Z")

</div>

Hey guys:

Not sure what’s going on here, but when I trigger this AJAX request…

```auto

function login(login_username, login_password) 
{
    var postData = "username=" + login_username;
        postData += "&password=" + login_password;
        var request = new XMLHttpRequest(); 
        
        request.open("POST", "https://api.something/door/knock" , true); 
        request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
        request.setRequestHeader("Content-length", postData.length);
         request.setRequestHeader("Connection", "close");
        
                request.onreadystatechange = function() {
                    
                        if(request.readyState == 4) 
                        { 
                        
                        obj_user = eval(request.responseText);
                        alert(obj_user);
                        } 
                } 
        request.send(postData); 

} 

```

… no results come back. I get blanks in Firebug and when I throw the obj\_user into an alert, nothing comes out. Just undefined.