I would like to read a file (server-side) using jQuery. I have tried code supplied by multiple sites and it has not worked.

The code I tried last is:

```
jQuery.get("users/" + get("user") + "/display.txt", function(data) {
    fullName = data;
});

```

However the variable 'fullName' (which is previously declared in the code) comes out as 'undefined'. How can I get this to work?

EDIT: Full code (excluding CSS)

```
<!DOCTYPE html>
<html>
    <head>
        <title>Chat</title>
        <script src="jquery-1.11.3.min.js"></script>
        <script type="text/javascript">
            function get(variable) {
                var query = window.location.search.substring(1);
                var vars = query.split("&");
                for (var i=0;i<vars.length;i++) {
                    var pair = vars[i].split("=");
                    if(pair[0] == variable){return pair[1];}
                }
                return(false);
            }
            var fullName;
            var file = "users/" + get("user") + "/display.txt";
            jQuery.get(file, function(data) {
                fullName = data;
            });
        </script
    </head>
    <body bgcolor="#B2C2F0">
        <div class="window">
            <div class="rightCorner">
                <span><script type="text/javascript">document.write(fullName)</script></span>
            </div>
        </div>
    </body>
</html>

```