Drag-and-drop (Drag and Drop) is part of the HTML5 standard. Http://www.w3school.com.cn/html5/html_5_draganddrop.asp
The Datatransfer.setdata () method sets the data type and value of the dragged data
DragStart : Triggered when the dragged element starts being dragged
drag : Triggers when dragged elements are dragged
DragEnter : Triggered when a dragged element enters the target element
dragover : Triggered when the dragged element moves on the target element
DragLeave : Triggered when a dragged element leaves the target element.
drop : Triggered when the element is dragged over the target element and the left mouse button is released
dragend : Triggers when drag-and-drop behavior ends
Overall life cycle
DragStart, drag, DragEnter, dragover, dragleave , Gend
Http://www.cnblogs.com/fsjohnhuang/p/3961066.html
HTML 5 drag and drop drag dragend dragover ....