Function shuffle

examples/Chaser.js:22–29

(array)

}

function shuffle(array) {
  for (var i = 0, l = array.length; i < l; i++) {
    var j = Math.floor(Math.random() * l);
    var temp = array[i];
    array[i] = array[j];
    array[j] = temp;
  }
}

var colorNames = Object.keys(colors);
shuffle(colorNames);