Question

Is it possible to have keyboard event listener canvas.addEventListener('onkeydown', ev_keydown, false); like we have Mouse event Listeners

canvas.removeEventListener('mousedown', ev_mousedown, false);
canvas.addEventListener('mousedown', ev_mousedown, false); 

in JavaScript.
If not then what would be the alternate?

Answer 1

jQuery offers a simple way to bind eventlisteners to DOMElements

and there are also eventlisteners for keyboard events here are some links

http://api.jquery.com/keydown/

http://api.jquery.com/keypress/

http://api.jquery.com/keyup/

you can bind them to window and this should do what you want

you can also use your own method to bind events in a cross-browser compatible way

function bindEvent(e, typ, handler) {
   if(e.addEventListener) {
      e.addEventListener(typ, handler, false);
   }else{
      e.attachEvent('on'+typ, handler);
   }
}

this should also allow you to bind the mentioned types of events