php - jQuery-File-Upload without file -

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I am using jQuery plugin "jQuery-File-Upload" to manage a form. I Tried to search my problem but nothing.

The problem is that in this form an optional field is allowed for file upload. When I insert a file, it all goes well, but when I decide not to include a file then the plugin script will not work.

Now I know that this is a plugin to upload files exclusively, even then it happens

What is the way to solve this problem?

Thanks Peter

P:> Update to add code:

form.fileupload ( {Url: 'php / file.php', data type: 'json', autoUpload: wrong, replace fileInput: incorrect, sequential upload: wrong, maxfileSize: 10000000, minFileSize: 0, accept file type: /(\.:\/ ) (Gif.jpe? G | png) $ / i, add: function (e, data) {data.context = button.click (function (e) {e.preventDefault (); // validity for side data / / Data to recover. Submit ();})}}, failed: function (e, data) {console.log ('unsuccessful') to send; console ;log (data);} T: Function (E, Data) {console.log ('Progress'); console.log (progress);}, done: function (e, data) {consol E.log ('done'); Console.log ( Data);}});

I was the author's reply that this option has not been implemented on the framework: .

I have decided to go with a different jQuery plugin that does not force me to duplicate the file with the attached methods or without the file. Works in IE9

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