Trigger event on changing Textinput or Textarea value MeteorJS

I want to add the content of a textarea (or textarea) to a reactive variable and bind it to a view similar to AngularJS double-binding.

The listening problem keydown

is that the last character will not be included. If I use keyup

, there will be a delay. Is there a way to listen for a value change in a textbox and set a reactive variable right after it changes?

Template.body.events({
     "keydown #textarea":function(){
         input.set( $('#textarea').val());
     }
 });