title: Writing a custom text box for web pages
body: <p>I want to capture user's activities on my textbox. Since a normal textbox won't give me enough information on what my user is doing currently with it, I want to start on a custom HTML text box.
  For e.g.
  If my user is typing
  Hello world! (Say he made a typo...) I should be able to tell him that,</p>
  
  <p>H e l l o  w o r l e [bksp] d !</p>
  
  <p>also if a user selects a text, I should be notified about it.</p>
  
  <p>P.S. I've mentioned a custom text box inorder to be generic. If I can make use of / create something like a plugin on the already available text box or say even a javascript, it's fine.</p>