Only lastly created qrcode can be updated when multiple codes are on a page

[brahmwindeler]

If multiple qrcodes are generated on a page and the data is then changed for any of the qrcodes other than the last, the last qrcode generated is changed. Maybe there is data that is being stored in the class rather than in the instance of the QRCode object?

It can be reproduced by creating three text areas that supply the data to encode, creating some functions that instantiate/update the QRCode objects, and then changing the data in the text areas. I've created a jsfiddle page to do this here: http://jsfiddle.net/p6dLK/

[davidcl64]

This is due to the code in the Drawing object. The variables used are trapped by the closure during construction because they aren't scoped to 'this'.