Convert javascript object to URL parameters

I realize that fundamentally I'm probably going about this the wrong way so I'm open to any pushes in the right direction.

I'm trying to use the HipChat API to send a notification to a room like so:

https://www.hipchat.com/docs/api/method/rooms/message

I'm trying to build the URL in the example with a js object's parameters, so basically I'm trying to convert this:

var hipChatSettings = {
            format:"json",
            auth_token:token,
            room_id: 1,
            from: "Notifications",
            message: "Message"
        }

To this:

https://api.hipchat.com/v1/rooms/message?format=json&auth_token=token&room_id=1&from=Notifications&message=Message

You should check this jQuery.param function.

var params = { width:1680, height:1050 };
var str = jQuery.param( params );
console.log(str);

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>