I cannot confirm about browser support but I believe it should be supported on most major browsers.
For further research, I hope this article from MDN will help, HTML Drag and Drop API
After looking at the spec I guess support is not so bad. Only An issue for a couple small events. Partial IE support even
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.