Input type file disable value

A comma separated list with any of the following: an Internet media type ; file extensions like ". This attribute provides the browsers with a hint about what type of files the author expects to receive in this control.

Upload a document:. A boolean value instructing the browser to set the focus to this control when the document has finished loading or when the dialog where the control finds itself is shown. If the attribute has the value "autofocus" or the empty string "" , or if it's just present, the control should get the focus as soon as possible, after the page or dialog has been loaded.

A boolean value indicating wether the control is disabled or not. If the attribute takes the value "disabled" or the empty string "" , or if it's just present, the control will be disabled. Disabled controls are rendered greyed out if visible , are blocked from user interaction and, more importantly, their values if any aren't sent when the form is submitted.

The value of the id attribute of the form with which this control is associated to. This attribute is new in HTML 5 and helps defining the pertenence of controls in nested or distant forms. A boolean value indicating whether the control should accept the selection of more than one file at a time. If the attribute has the value "multiple" or the empty string "" , or if it's just present, the control should allow users to pick more than one file at a time.

When the multiple attribute is present, any given name for the control must be followed by an opening and closing square brackets "[]" for the multiple upload to work properly. Report Error. Your message has been sent to W3Schools.

W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning. Asked 11 years, 8 months ago. Active 18 days ago. Viewed k times. TylerH Add a comment. Active Oldest Votes. This worked for me. I'm seven years late on this -- but is there any semantic difference between these two in ? You're not late at all, the magic is still there : I don't remember what platforms I tested on back then, but today readonly lowercase still doesn't work in Firefox 52 on Ubuntu -- should be camel case.

Why doesn't this work for me? Was there ever a browser in which the property name was not in camelCase? Show 2 more comments. Matthew Lock Nick Craver Nick Craver k gold badges silver badges bronze badges. In addition to the attributes listed above, the following non-standard attributes are available on some browsers.

You should try to avoid using them when possible, since doing so will limit the ability of your code to function in browsers that don't implement them. The Boolean webkitdirectory attribute, if present, indicates that only directories should be available to be selected by the user in the file picker interface.

Though originally implemented only for WebKit-based browsers, webkitdirectory is also usable in Microsoft Edge as well as Firefox 50 and later. However, even though it has relatively broad support, it is still not standard and should not be used unless you have no alternative. Each unique file type specifier may take one of the following forms:. The accept attribute takes as its value a string containing one or more of these unique file type specifiers, separated by commas.

For example, a file picker that needs content that can be presented as an image, including both standard image formats and PDF files, might look like this:. Note: You can find this example on GitHub too — see the source code , and also see it running live. Regardless of the user's device or operating system, the file input provides a button that opens up a file picker dialog that allows the user to choose a file.

Including the multiple attribute, as shown above, specifies that multiple files can be chosen at once. The user can choose multiple files from the file picker in any way that their chosen platform allows e. The FileList behaves like an array, so you can check its length property to get the number of selected files.

A number specifying the date and time at which the file was last modified, in milliseconds since the UNIX epoch January 1, at midnight.