No prior knowledge of WAI-ARIA is assumed, although it is recommended you read my introduction to WAI-ARIA article before starting this article. A basic knowledge of scripting is assumed, and is necessary to understand exactly what is going on in the code example, but this knowledge is not necessary to understand the basic concepts discussed.
After reading this article you will have an understanding of how to structure applications with drag and drop functionality so they are accessible.The term drag and drop infers using a mouse to move an object from one location to another.
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Read full article at Source: Dev.Opera — Accessible Drag and Drop Using WAI-ARIA