var form   = document.getElementById('shorten-form');
var urlBox = form.elements[0];
var link   = document.getElementById('link');
var shrBox = document.getElementById('shortened');

function displayShortenedUrl(response) {
  link.textContent = response.data.url;
  link.setAttribute(
    'href', response.data.url
  );
  shrBox.style.opacity = '1';
  urlBox.value = '';
}
form.addEventListener('submit', function(e) {
  e.preventDefault();

  axios.post('/new', { url: urlBox.value }).then(displayShortenedUrl);
});