The classic javascript closure

i_really_like_this.js

/*
 * When I get frustrated with looking a javascript that 
 * looks far more like java, I really like looking at this
 * code to make me a bit happier.
 *
 * http://en.wikipedia.org/wiki/Closure_%28computer_science%29
 */

var printMessage = function (s) {
  var f = function () {
    console.log(s + ' was pressed.');
  }
  return f;
}

buttonA.onClick = printMessage('A');
buttonB.onClick = printMessage('B');
buttonC.onClick = printMessage('C');