Question

It can be JavaScript, Ajax or PHP. A need a real code parts or good guide. Is there any link?

Purpose of this: I am planning a keyboard game which is running with characters which are pressed by user. If user press the button a, I have to sent send this data to MySQL database. Is this possible? If yes, with which code?

Answer 1

If your using jQuery framework you can use keypress event (if you’re not using jQuery you can still use a keypress events but jQuery makes it easier!)

From the docs:

$("#target").keypress(function(event) {
  if ( event.which == 13 ) {
     event.preventDefault();
  }
}

e.which will give you access to the keycode the user pressed. With this you can easily respond to specific key presses. 13 is a javascript keyboard code for ‘enter’ So perhaps you want to save all input to a variable that user types on the keyboard and when enter is typed you can send that data using ajax. jQuery makes this very simple.