如何从浏览器的onClick事件中触发击键？

Question

Let's say we have a simple button:

 <button type="button" onclick="onClickHandler()">Click Me!</button>

How can you do the following on: onClickHandler()

1. Switch to a different window, one method i can think of is firing ALT + TAB .
2. Do some more key strokes. Eg type in some message in chat and press ENTER.
3. Switch back to the browser by firing another ALT + TAB .

Is it possible? How?

Edit, To add more details/context to my question:

What I am trying to achieve here is to make a convenient button on a web page that will auto generate a message based on a template, eg

"Hi ${name}, I would like to buy ${item} from your for this ${price}".

This message would then be sent in another active running window, and then the message is typed in (like a macro) and then sent!. After sending, the window focus should still be the Browser.

Answer 1

Found my solution

Instead of javascript doing the hardwork. js will just put the generated string into the clipboard, and fire a keystroke. This keystroke will be detected by AHK ( http://ahkscript.org/ ). And then AHK can do the rest.