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Consider this HTML snippet:
<input type='file' id='fileUpload' />
To get access to this control in JavaScript, we can write:
var temp = document.getElementById('fileUpload');
OK, don't get mad, I know you all know this. But the interesting part is that, temp variable now has a property called files, (not file, but files, the plural form) which is of type FileList, which of course is a list of File objects. This semantically should mean that uploading multiple files via one and only one HTML file upload control should be possible. However, you can't upload multiple files this way and there are many workarounds, not straight usage.
How do you explain this paradox?
Update: I built this jsfiddle to see one of the answers in action.
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<input type="file"> <input> elements with type="file" let the user choose one or more files from their device storage. Once chosen, the files can be uploaded to a server using form submission, or manipulated using JavaScript code and the File API.
html file through a browser, the client will be able to upload a file to the server using Ajax and pure JavaScript. A pure JavaScript file uploader simplifies Ajax based interactions with the server.
The input element, having the "file" value in its type attribute, represents a control to select a list of one or more files to be uploaded to the server. When the form is submitted, the selected files are uploaded to the server, along with their name and type.
In HTML5, The multiple attribute specifies that multiple values can be selected for an input field.
<input type='file' multiple='multiple' />
These links should help:
http://www.w3schools.com/html5/html5_form_attributes.asp
http://rakaz.nl/2009/08/uploading-multiple-files-using-html5.html
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According to the Gecko DOM Reference, it is only applicable when using the file upload element via drag-n-drop.
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