Validation input type file javascript

I am preventing both fields from being filled use of a picture OR text , ensuring that one is filled, and preventing files other than. I'll add more but am having trouble already with the re-submit after correction. I've searched for an answer to this all over This title will only appear when visitors hover their pointer over the image. Please re-enter. Multiple file inputs is no problem. The problem is that your script only checks one. Funny though, I just plopped this in: else if form.

Still, only the first file field is checked. And maybe you want to update the pattern for validating e-mailaddresses. It'doesn't check all the other top-level domains. Toggle navigation. This string is a comma-separated list of unique file type specifiers. Because a given file type may be identified in more than one manner, it's useful to provide a thorough set of type specifiers when you need files of a given format.

The capture attribute value is a string that specifies which camera to use for capture of image or video data, if the accept attribute indicates that the input should be of one of those types. If this attribute is missing, the user agent is free to decide on its own what to do. If the requested facing mode isn't available, the user agent may fall back to its preferred default mode.

Note: capture was previously a Boolean attribute which, if present, requested that the device's media capture device s such as camera or microphone be used instead of requesting a file input. When the multiple Boolean attribute is specified, the file input allows the user to select more than one file. 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. Here we have shown only the image file type validation, you can use this same script for other file types validation. You only need to specify the allowed file extensions on allowedExtensions variable in JavaScript code.

Apart from the file type validation, this script will help to display image preview without upload using JavaScript.

Are you want to get implementation help, or modify or enhance the functionality of this script? Submit Paid Service Request. If you have any questions about this script, submit it to our QA community - Ask Question. Your Website.

Toggle navigation. Ask Question Share Tweet. Download Source Code View Demo. Pushpen Said Thanks a lot. October 9, at PM. Barun Kumar Pal Said Thanks a lot for this tutorial. May 15, at AM.