Does ie10 support the ability to support copy and pasting an image. IE has the fileReader api which is nice, but it would be cool to have ability to paste a picture.
A good indicator that pasting images into IE10 is not possible, is the nice site http://pasteboard.co. The site tries really hard to allow pasting of images, however it fails for IE10.
For the sake of completeness:
In chrome/webkit you have to handle event paste and look into event.clipboardData.
In firefox you have to create a <div/> with attribute "contenteditable". See http://joelb.me/blog/2011/code-snippet-accessing-clipboard-images-with-javascript/