Drag drop js puro

dragdrop_purejs.html

// HTML
<div id="bin"></div>
<ul>
    <li><a id="one" href="#">one</a></li>
    <li><a href="#" id="two">two</a></li>
    <li><a href="#" id="three">three</a></li>
    <li><a href="#" id="four">four</a></li>
    <li><a href="#" id="five">five</a></li>
</ul> 

// CSS
body { font-family: helvetica, arial; }
li { list-style: none; }
li a {
  text-decoration: none;
  color: #000;
  margin: 10px;
  width: 150px;
  border: 3px dashed #999;
  background: #eee;
  padding: 10px;
  display: block;
}

*[draggable=true] {
  -moz-user-select:none;
  -khtml-user-drag: element;
  cursor: move;
}

*:-khtml-drag {
  background-color: rgba(238,238,238, 0.5);
}

a:hover:after {
  content: ' (drag me)';
}

li.over {
  border-color: #333;
  background: #ccc;
}

#bin {
  background: url(http://placehold.it/200x200/cccccc) top right no-repeat;
  height: 250px;
  width: 166px;
  float: right;
  border: 5px solid #000;
  position: relative;
}

#bin.over {
  background: url(http://placehold.it/200x200/ffcc00) top left no-repeat;
}

#bin p {
  font-weight: bold;
  text-align: center;
  position: absolute;
  bottom: 20px;
  width: 166px;
  font-size: 32px;
  color: #fff;
  text-shadow: #000 2px 2px 2px;
}


// Javascript
var eat = ['item1', 'item2', 'item3', 'item4'];
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 = 'move';
      e.dataTransfer.setData('Text', this.id); // obrigatório, senão não funciona
    });
  }

  var bin = document.querySelector('#bin');
  
  function addEvent(elem, event, func ) {
    if (!!window.attachEvent)  elem.attachEvent('on' + event, func);
    else elem.addEventListener(event, func, false);
  }

  addEvent(bin, 'dragover', function (e) {
    if (e.preventDefault) e.preventDefault(); // permite o drop
    this.className = 'over';
    return false;
  });

  // para trabalhar com o IE
  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();
    var el = document.getElementById(e.dataTransfer.getData('Text'));
    el.parentNode.removeChild(el);

    // texto + efeito de fade
    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;
  });