How to change the folder in the jQuery File Upload plugin?

From what I found on the net, you have 3 ways to do this:

1- Include in form

<form id="fileupload" action="/Backload/UploadHandler" method="POST" enctype="multipart/form-data">
        ...
        <input type="hidden" name="objectContext" value="user123" />
        ...
    </form>

2- Via Jquery

$('#fileupload').bind('fileuploadsubmit', function (e, data) {
    // The example input, doesn't have to be part of the upload form:
    var $context = $('#objContext');
    data.formData = { example: $context.val() };
});

3- No controller

var fileUploadUrl = "/Backload/UploadHandler" + "?objectContext=user123";

Source: Source Link