sample javascript to check file size before upload and resize.

[aspiringguru]

found this on reddit(hi again)

these javascript examples should be useful in promoting adoption.

https://stackoverflow.com/questions/3717793/javascript-file-upload-size-validation/3717847

https://stackoverflow.com/questions/23945494/use-html5-to-resize-an-image-before-upload

thanks for posting the code.