Sending data to web through command-line with javascript built-in

Webkit and Selenium use a browser interface to interact with javascript elements and send data. Is there a way where I can fill in a ajax form and send data straight from a command-line ? If not, why is it not possible ? If so, how ? Th开发者_如何学JAVAanks

You can use my terminal emulator jquery plugin, but If you want to do AJAX when you don't have access to javascript source code you will need to create Bookmarklet