demo.js

if (!('boxShadow' in document.body.style)) {
  document.body.setAttribute('class', 'noBoxShadow');
}

document.body.addEventListener('click', function (e) {
  var target = e.target;
  if (target.tagName === 'INPUT' && target.getAttribute('class').indexOf('liga') === -1) {
    target.select();
  }
});

(function () {
  var fontSize = document.getElementById('fontSize');
  var testDrive = document.getElementById('testDrive');
  var testText = document.getElementById('testText');
  function updateTest() {
    testDrive.innerHTML = testText.value || String.fromCharCode(160);
    if (window.icomoonLiga) {
      window.icomoonLiga(testDrive);
    }
  }
  function updateSize() {
    testDrive.style.fontSize = fontSize.value + 'px';
  }
  fontSize.addEventListener('change', updateSize, false);
  testText.addEventListener('input', updateTest, false);
  testText.addEventListener('change', updateTest, false);
  updateSize();
})();