API：http://www.tutorialspoint.com/html5/html5_drag_drop.htm
example：http://jsfiddle.net/bNQeJ/4/
注意点：http://stackoverflow.com/questions/8801816/drag-drop-html-5-jquery-how-to-fire-the-drop-event
备注：According to this you need to call event.preventDefault on the last dragenter or dragover event to create a valid drop target.
html5 drag and drop with jquery
原文：http://www.cnblogs.com/reedmi/p/4152365.html