Question

I have want to do something like this to mimic a form post:

    $.ajax({
    url:url,
        type: "PUT",
    async:true,
    cache:false,
    data:
    {'end':end,'duration':duration}
    }

However, the data param only take data as a string, and the serialize() function only works if there is already a form.

Is there any way to parse the json array into a data string? (Multipart form)

Answer 1

Why do you think it only takes a string? Do you want to mimic an actual PUT that PUTs two variables, end and duration, or do you want to PUT a JSON string?

data Object, String
Data to be sent to the server. It is converted to a
query string, if not already a string. It’s appended to the url for
GET-requests. See processData option to prevent this automatic
processing. Object must be Key/Value pairs. If value is an Array,
jQuery serializes multiple values with same key based on the value of
the traditional setting (described below).

Here is a jsfiddle (using POST) that shows that it will work:
http://jsfiddle.net/Hqgbj/

And a screenshot of firebug:
http://cl.ly/253g1f3g032t1a381l0u