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drag and drop with html5

27 Jun
  <script>

  var eat = ['yum!', 'gulp', 'burp!', 'nom'];
  var yum = document.createElement('p');
  var msie = /*@cc_on!@*/0;
  yum.style.opacity = 1;

  var links = document.querySelectorAll('li > a'), el = null;
  for (var i = 0; i < links.length; i++) {
    el = links[i];

    el.setAttribute('draggable', 'true');

    addEvent(el, 'dragstart', function (e) {
      e.dataTransfer.effectAllowed = 'copy'; // only dropEffect='copy' will be dropable
      e.dataTransfer.setData('Text', this.id); // required otherwise doesn't work
    });
  }

  var bin = document.querySelector('#bin');

  addEvent(bin, 'dragover', function (e) {
    if (e.preventDefault) e.preventDefault(); // allows us to drop
    this.className = 'over';
    e.dataTransfer.dropEffect = 'copy';
    return false;
  });

  // to get IE to work
  addEvent(bin, 'dragenter', function (e) {
    this.className = 'over';
    return false;
  });

  addEvent(bin, 'dragleave', function () {
    this.className = '';
  });

  addEvent(bin, 'drop', function (e) {
    if (e.stopPropagation) e.stopPropagation(); // stops the browser from redirecting...why???

    var el = document.getElementById(e.dataTransfer.getData('Text'));

    el.parentNode.removeChild(el);

    // stupid nom text + fade effect
    bin.className = '';
    yum.innerHTML = eat[parseInt(Math.random() * eat.length)];

    var y = yum.cloneNode(true);
    bin.appendChild(y);

    setTimeout(function () {
      var t = setInterval(function () {
        if (y.style.opacity <= 0) {
          if (msie) { // don't bother with the animation
            y.style.display = 'none';
          }
          clearInterval(t);
        } else {
          y.style.opacity -= 0.1;
        }
      }, 50);
    }, 250);

    return false;
  });

  </script>

http://html5demos.com/drag

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Posted by on June 27, 2011 in HTML 5

 

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