Post a form with JSONP [closed]

Question

I want to post a form with JSONP is there any feasible solution?

I want to post form to different domain from jsonp.

Answer 1

You cannot make a cross origin POST with JSONP.

However, you can:

1. Serialize the form into a query string and send it along with a GET request.
2. Use CORS(Cross Origin Resource Sharing) if you have the luxury of being able to target only modern browsers.

Answer 2

A JSONP request is just creating a script tag with a function call:

Javascript:

var head = document.getElementsByTagName("head")[0];
var script = document.createElement('script');
script.type = 'text/javascript';
script src = 'url_to_post.serverside?callback=callback_function';

var callback_function(response) {
    head.removeChild(script);
    alert(response.abc); // returns def;
};

url_to_post.serverside:

callback_function({"abc": "def"});

Hope you can see why it only works for GET requests

:)