[jQuery] Need help to understand jQuery

[jQuery] Need help to understand jQuery


Hi Guys
I am having a tough time getting the hang of jQuery so the best of
learning for me is to see my current code in jQuery so I can
understand it better. Here is an GET ajax request I make in JS:
    function GET(link) {
        // -- Enable Loader Tag
        setClassName("message", "display");
        // -- Execute xmlhttprequest
        var xhr = CreateRequest();
        xhr.open("GET",link,false);
        xhr.send(null);
        try {
            // -- Check for Custom Exception Message
            var x = xhr.responseXML.getElementsByTagName("message");
            if(x != null) {
                //-Print Exception
                exception(x[0].childNodes[0].nodeValue);
                return false;
            }
        } catch(e) {
            // -- No custom exception found, continue as normal
            if(xhr.status==200) {
                setClassName("message", "setnone");
                return xhr.responseText;
            }
            else if(xhr.status==500) {
                exception(500);
                return false;
            }
            else if(xhr.status==501) {
                exception(501);
                return false;
            }
            else if(xhr.status==404) {
                exception(404);
                return false;
            }
        }
    }
Is it ok if someone could convert it into a jQuery for me ? I have
gone through many tutorials but I wouldnt know how to implement it
into my code above.