Send the Form Data as JSON in Knockoutjs

sendJson.js

// write this under Knockout viewModel
// This is an example to send all the users comments to the server
// Basic Example we can fit it for other purposes as well

self.save = function() {
        return $.ajax({
            url: "comments.php",
            contentType: 'application/json',
            type: 'POST',
            data: JSON.stringify({
                'comment': self.comment(),
                'name' : "Chitrank",
                'uid' : "23",
            }),


            success: function(data) {
                console.log("Pushing to comment array");
                self.comments.push(new Comment({ comment: data.comment, name: data.name, uid: data.uid }));
                return;
            },
            error: function() {
            	return console.log("Failed");
            }
        });
    };