Best Javascript library for drag and drop?
I'm looking for the best JavaScript library for handling complicated drag and drop operations. I'm interested in implementing a grid-based inventory system for my own Web 2.0-style RPG, like Baldur's Gate or Neverwinter Nights (with variable-sized but rectangular items).

Lots of Javascript frameworks seem to have drag & drop implementations, so I'm looking for recommendations on which one is superior from someone who has experience using these features.
Best Javascript library for drag and drop?
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I'm looking for the best JavaScript library for handling complicated drag and drop operations. I'm interested in implementing a grid-based inventory system for my own Web 2.0-style RPG, like Baldur's Gate or Neverwinter Nights (with variable-sized but rectangular items).

Lots of Javascript frameworks seem to have drag & drop implementations, so I'm looking for recommendations on which one is superior from someone who has experience using these features.