Font playground

See Hack (and other monospaced fonts) live in action!
Install your fonts locally and they will show up in the dropdown selections.
Use the dropdown options to modify the typeface, text size, language, and highlighter scheme.

Timer.prototype.applyEasing = function() {
  var t = this.percentage;
  if (this.easing === 'ease-in') {
    return t * t;
  } else if (this.easing === 'ease-out') {
    return t * (2 - t);
  } else if (this.easing === 'ease-in-out') {
    if (t < 0.5) {
      return 2 * t * t;
    } else {
      return -1 + (4 - 2 * t) * t;
    }
  }
  return t; // default is linear.
};

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