Spits out a binary representation of hours:minutes:seconds

binary-clock.js

setInterval(displayTime, 1000);

function displayTime() {
  var date =  new Date();
  var h = date.getHours().toString(2);
  var m = date.getMinutes().toString(2);
  var s = date.getSeconds().toString(2);

  h = fillStringLength(h, 5, '0');
  m = fillStringLength(m, 6, '0');
  s = fillStringLength(s, 6, '0');

  console.log(h + ':' + m + ':' + s);
};

function fillStringLength(string, desiredLength, fillerText) {
  if (string.length < desiredLength) {
    string = fillerText+string;
    return fillStringLength(string, desiredLength, fillerText);
  } else {
    return string;
  };
};