Asked 10 years ago. Active 10 years ago. Viewed 13k times. Maximilian Lindsey Maximilian Lindsey 2 2 gold badges 16 16 silver badges 33 33 bronze badges. Add a comment. Active Oldest Votes. Use the target instead. Maurice Maurice When all images in the preview have been resized, the above event will fire once more without any of the parameters above i. This event is triggered when all file images in preview window are resized based on the resizeImage and maxImageWidth or maxImageHeight settings.
This event is triggered when the file browse button is clicked to open the file selection dialog. This event is triggered when the upload process is launched by clicking a upload button, and the entire widget is locked disabled until upload is getting processed.
Only the Cancel button will be enabled when the file input is locked. This event is triggered when the upload process is completed successfully or with error. The entire widget is unlocked enabled and reverts to initial state.
You can prevent the subsequent file removal by returning false to this event or triggering event. This event is triggered on click of the delete button of each initial preview thumbnail file in the initialPreview content set. This event is different from filepredelete event in the sense that this event is fired before the ajax request is initiated and can help one to validate if the ajax request needs to be initiated.
Refer the delete validation demo 1 and delete validation demo 2 for understanding usage. Note that you may return an ajax aborted output as a boolean or as a javascript Promise object the usage of which you can understand in the demo links before.
Additional parameters available to this event are:. This event is triggered before ajax request for deletion is sent to the server of each initial preview thumbnail file in the initialPreview content set. This event is different from filebeforedelete event in the sense that this event is fired after the ajax request is initiated and can help one to abort the ajax request if desired based on validation.
This event is triggered after successful completion of ajax request for deletion of each initial preview thumbnail file in the initialPreview content set. Refer the delete validation demo for understanding usage. This event is triggered before submission of the upload ajax request.
You could use this event to manipulate the uploadExtraData before its submitted via ajax. The following additional parameters are also available specifically and only if the upload is triggered via each thumbnail upload button. This event is triggered only for ajax uploads and before upload of each thumbnail file. This event is triggered after filepreajax and within the ajax beforeSend event. In this case, the fileuploaded event is triggered after every individual selected file is uploaded successfully.
This event is triggered only for ajax uploads and before a batch upload for both synchronous and asynchronous uploads after the upload button is clicked. This event is triggered only for ajax uploads and after a successful synchronous batch upload.
This event is triggered ONLY for ajax uploads and in the following scenario:. When you have uploadAsync set to false and you have triggered batch upload. In this case, the filebatchuploadsuccess event is triggered after all files have been successfully uploaded. This event is triggered after a successfully uploaded thumbnail is removed using the thumbnail delete button.
This is usually applicable when you have showUploadedThumbs set to true. This event is triggered when the file input widget is disabled prevents any modification using the disable method. This event is triggered when the file input widget is enabled allows modification using the enable method. The following parameters will be additionally sent as a JSON object whose keys are.
This event is triggered when the zoom button is clicked to show the content detailed preview in a modal dialog. This event is triggered after the modal has been made visible to the user will wait for CSS transitions to complete. For profile pictures, it will be confusing if we do not show the uploaded picture to the user immediately after upload. We can use the FileReader object to convert the file to a binary string. Then add a load event listener to get the binary string on successful file upload.
As we have seen, we can read the size metadata of a file, we can actually use it for a file size validation. You may allow users to upload an image file up to 1MB.
Let us see how to achieve that. The better usability is to let your users know about a file upload progress. We are now aware of the FileReader and the event to read and load the file.
The FileReader has another event called, progress to know how much has been loaded. We can use HTML5's progress tag to create a progress bar with this information. How about you try uploading a bigger file and see the progress bar working in the CodePen below? Give it a try. Can we upload an entire directory? Well, it is possible but with some limitations. There is a non-standard attribute at least, while writing this article called, webkitdirectory that allows us to upload an entire directory.
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.
Once the user clicks the Upload button, the uploading takes place. One important point to note here. The accept attribute value is a string that defines the file types the file input should accept.
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:.
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