Javascript file upload plugin with progress bar support. Works in all major browsers, including IE7+, Chrome, Firefox, Safari, and Opera. No dependencies - use it with or without jQuery.
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Do not append file into FormData if already has ! #155
Sometimes people may want to minimize the file size and will do some compress then set the new compressed file into the form.
Therefore when data already contains new file, do not append the original one.
Sometimes people may want to minimize the file size and will do some compress then set the new compressed file into the form. Therefore when data already contains new file, do not append the original one.
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