Drag and Drop with jQuery UI — a practical guide to jQuery UI drag drop with clear examples you can reuse in real projects.
jQuery Tutorial Series (88/101). Prefer one article? Read the complete jQuery tutorial.
Short description
HTML5 DnD or modern libraries may fit new projects better.
draggable droppable
$('.item').draggable({ revert: 'invalid' });
$('#bin').droppable({
drop: function (e, ui) { ui.draggable.remove(); }
});