Comments on: Drag n’ Drop in JavaScript

By: Ramin

Ramin — Wed, 30 Nov -0001 00:00:00 +0000

Cool stuff. One thing about the drag n drop lists. It seems like its all client side. How would this help in a real world situation where you need to store the new ordered lists that you just dragged and dropped? It doesn’t communicate with the server at anytime, so you can’t really save that information. Not sure how useful that would be.

I guess you can also set some hidden field values or use Ajax to communiate with the server. Now that would be a neat demo.

By: David

David — Wed, 30 Nov -0001 00:00:00 +0000

What is the possibility of using nested UL lists with sorting? That is something that I would be very interested in.

Have you tried that at all?

By: Sebastian

Sebastian — Wed, 30 Nov -0001 00:00:00 +0000

Have you ever tried qooxdoo (qooxdoo.sourceforge.net). There is a full drag and drop implementation – but it’s target are web applications – not simple html pages.

By: Harald Albrecht

Harald Albrecht — Wed, 30 Nov -0001 00:00:00 +0000

I’m currently working on Drag&Drop for XHTML and SVG pages. In particular, I find your examples of sorting lists and slides very good (absolutely high drool factor). The code I wrote so far is able to handle mixed XHTML/SVG documents (compound documents). It can show a selection rectangle with resize handles, and it can be used to move and resize both XHTML and SVG elements, as long as they allow absolute positioning. The code hides differences in XHTML and SVG semantics.

However, currently one important thing for drag&drop is still missing: while it is now possible to handle the drag, it is not possible to detect whether a particular “thing” has been dropped onto a particular other element. Part of the problem is that there is no function to detect what is “under” the cursor and the object being dragged. I would like to see support for this coming from web browsers so writing cross-platform interactive web-applications could become a little more easier…