Javascript file upload

Javascript file upload libraries are used to create interactive and responsive file upload mechanism. If you are a developer, you might at least created a file upload system once. See also : Quick Way to Learn Bootstrap. If you are looking to develop a file uploading mechanism these frameworks can help you in different ways.

For an effective, user-friendly file uploaderyou should consider some important things that we are going to explain to you. A good file uploader should be simple, clean and easy to understand.

It should have an obvious upload button so the user can easily understand. Drag and drop file upload is quite a trend these days if you have two or more files you should consider drag and drop file upload system. For an optimal user experience, an interactive progress bar is a must. So the user knows the progress of the upload, hence an unwanted panic can be avoided.

We have hand picked these file uploading libraries or plugins to achieve your mission. This collection includes jquery file upload, HTML file upload, Ajax file upload and drag and drop system and more.

All these file upload scripts are beautiful and interactive. I am Prasad G Prechu. I analyse, Optimise websites to improve their search results, a regular blogger of cssauthor. Leave A Reply Cancel Reply. This site uses Akismet to reduce spam. Learn how your comment data is processed. Last updated Feb 25, 14, Continue Reading. You might also like. Prev Next. Leave A Reply. Pin It on Pinterest.This document describes how an application can accept one or more files that are dragged from the underlying platform's file manager and dropped on a web page.

The main steps to drag and drop are to define a drop zone i. These steps are described below, including example code snippets. This example illustrates the use of both APIs and does not use any Gecko specific interfaces.

The target element of the drop event needs an ondrop global event handler. The following code snippet shows how this is done with a is the generic container for flow content. It has no effect on the content or layout until styled using CSS.

Typically, an application will include a dragover event handler on the drop target element and that handler will turn off the browser's default drag behavior. To add this handler, you need to include a ondragover global event handler:. Lastly, an application may want to style the drop target element to visually indicate the element is a drop zone.

In this example, the drop target element uses the following styling:. Note that dragstart and dragend events are not fired when dragging a file into the browser from the OS. The drop event is fired when the user drops the file s.

In the following drop handler, if the browser supports DataTransferItemList interface, the getAsFile method is used to access each file; otherwise the DataTransfer interface's files property is used to access each file.

The following dragover event handler calls preventDefault to turn off the browser's default drag and drop handler. Get the latest and greatest from MDN delivered straight to your inbox. Sign in to enjoy the benefits of an MDN account. Define the drop zone The target element of the drop event needs an ondrop global event handler.

Last modified: Mar 23,by MDN contributors. Related Topics. Learn the best of web development Get the latest and greatest from MDN delivered straight to your inbox. The newsletter is offered in English only at the moment.A JavaScript library that can upload anything you throw at it, optimizes images for faster uploadsand offers a great, accessible, silky smooth user experience. Below you can find a list of adapters that make it easier to use FilePond with your favorite framework.

Receive a notification when a new adapter is released by subscribing to the newsletter. Doka Image Editor integrates beautifully with FilePond and unlocks the perfect image editing experience for your users. Automatic resizing and cropping of images on the client saves server bandwidth and dramatically increases upload speed. FilePond's user interface is navigable by Keyboard. FilePond is constantly being improved.

Stay up to date on new roadmap releases by subscribing to the newsletter. Upload anything, from anywhere A JavaScript library that can upload anything you throw at it, optimizes images for faster uploadsand offers a great, accessible, silky smooth user experience.

The core library is written in vanilla JavaScript and therefore can be used everywhere. React Vue Angular jQuery. Example Implementations Let's look at two quick example implementations and see what FilePond is capable of. Multi File Demo Add the multiple attribute to a file input to create a multi-file drop area.

Limit the maximum amount of files with the data-max-files attribute. Drop an image and FilePond will render a quick preview. It'll also correct mobile photo orientation info. Files can be reordered, grab a file and drag it to a new location. Image editing is powered by Doka. Should you accidentally drop an image on the browser window, FilePond will prevent the browser from opening it.

Multiple File Sources Drop files, select files from the file system, add files using the API, or copy and paste files. Image Optimization Automatic resizing and cropping of images on the client saves server bandwidth and dramatically increases upload speed. Responsive Automatically scales to available space. Is functional on both mobile and desktop devices.

That's not all Drag n' drop to reorder files Modify labels and icons Multiple or single file mode Filter files from dropped folders Restore temporary server files Catch files dropped on page Upload on drop or wait for user action Limit drop area height Drop to replace current file Copy paste files Add metadata to files Extend FilePond with plugins. FilePond is constantly being improved Inspect the roadmap below to find out what's coming soon.

Plugins Image editor Image rotation and flipping Image watermarks Image masking.More about Joseph Zimmerman ….

HTML5 Drag and Drop Uploading

Every second Tuesday, we send a newsletter with useful techniques on front-end and UX. Nowadays, though, we have an even fancier way of handling file selection: drag and drop.

Using the JavaScript FileReader API to Avoid File Upload Limits

Technically, this was already possible because most if not all implementations of the file selection input allowed you to drag files over it to select them, but this requires you to actually show the file element. The first thing we need to discuss is the events related to drag-and-drop because they are the driving force behind this feature. In all, there are eight events the browser fires related to drag and drop: dragdragenddragenterdragexitdragleavedragoverdragstartand drop.

As you might expect, you can register event handlers for these events in the same way you register event handlers for most browser events: via addEventListener. Note that the dragged item is dragged over a child of dropAreadragleave will fire on dropArea and dragenter will fire on that child element because it is the new target.

Pretty simple structure. You may notice an onchange handler on the input. Then you can use JavaScript to get rid of them for a cleaner form. The highlights, for now, are that the file input is hidden, but its label is styled to look like a button, so people will realize they can click it to bring up the file selection dialog.

Now we get to the meat of the situation: drag and drop. The first thing we need in the script is a reference to the drop area so we can attach some events to it:. The styles should already be there under the drop-area.

We had to use both dragenter and dragover for the highlighting because of what I mentioned earlier. If you start off hovering directly over dropArea and then hover over one of its children, then dragleave will be fired and the highlight will be removed. The dragover event is fired after the dragenter and dragleave events, so the highlight will be added back onto dropArea before we see it being removed. We also remove the highlight when the dragged item leaves the designated area or when you drop the item.

Keep in mind that files is not an array, but a FileList. That was anticlimactic. We then use the fetch API to actually send the image to the server.This post was originally published on the New Bamboo blog, before New Bamboo joined thoughtbot in London.

The result worked pretty well, but there was still some room for browser vendors to make things even simpler for us. Turns out, they have. The specific improvement that made this possible is the FormData interfacefirst introduced in Safari 5, and later in Chrome 7 and Firefox 4.

Also as usual, the best way to know if the client supports this feature is object detection. I have updated the function we used inadding a check for the FormData interface:. If the function returns true, you are good to go. If not, it may still be that the old technique can still be used although chances are slim.

If neither is, you will have to resort to some other way to do this, such as Flash argh! Last year, we fed it an instance of the File interface. This time instead, we will give it an instance of FormData. FormData gives us two ways to interface with it.

The first and simplest is: get a reference to the form element and pass it to the FormData constructor, like so:. This will send an Ajax request with all the fields of the form on it, not only file inputs. Any events that you may be listening to will be called, such as onprogress or onreadystatechange.

The solution proposed above, albeit useful, is a bit limiting in that we are forced to submit the whole form. Instead, we may want to submit the file independently of the rest of the form. This is common nowadays in places such as bulk photo uploaders on many social networks.

Fortunately FormData also allows us to do it this way. For this, it provides the method append name, value :. One immediate advantage over the old method: the data received on the server side will be indistinguishable from a normal form submission. With the old method, we had to add specific code on the server side to handle the incoming data in a specialised way. This is not necessary anymore, and removed code is debugged code!

There is another great advantage: it is easier to add progressive enhancement. We can have a perfectly normal form, and add this Ajax on top. It would be something like this:. We also read the action attribute of the form to know where to send the request. The beauty of this example is: if the object detection script returns false, this form will still work, and therefore functionality will remain intact.

I have found this problem across versions of the OS and browser apps. This is not the end of the world though. Obvious when you think of it:. But enough of theory. I have updated the old example to use this new technique. You can find this updated example at GitHub. Learn more about React services.Fine Uploader supports all major browsers and does not require Flash, jQuery, or any external libraries. Everything you need in a JavaScript file upload library.

A fully customizable progress bar is included in UI mode. Core users can build their own with the help of a friendly API. Sometimes the network misbehaves. Fortunately, Fine Uploader can detect these sorts of disturbances and notify the user, or even automatically retry uploading the failed piece.

File drag and drop

Limit your users to a specific file type, size limit, number of files, image dimensions, or write your own custom validator. Splitting a file into smaller pieces allows for a more efficient overall upload, and powers some Fine Uploader features such as pausing, and resuming uploads. Fine Uploader can also upload multiple chunks for the same file concurrently. Pause an in-progress upload when you know you are about to go offline, and safely resume them again right where you left off.

You can even optionally bypass your local server entirely with S3. Give your users an in-browser preview of images before they upload. You can even have scaled versions of images generated and uploaded automatically, keeping EXIF data intact. More details on the modules feature page. Visit the docs for more feature information. Read the Install Guide. Browser support Fine Uploader supports all major browsers and does not require Flash, jQuery, or any external libraries.

javascript file upload

Server support Use Fine Uploader with any server side technology. Drag and Drop Drag and drop files and even folders in Chrome and Opera straight from your desktop. Retry Sometimes the network misbehaves. Validators Limit your users to a specific file type, size limit, number of files, image dimensions, or write your own custom validator. Delete Uploaded Files Upload the wrong file? Use this feature to delete what you don't need. Multiple file selection Select more than one file at a time.

Auto and manual upload Fine Uploader can begin uploading files as soon as possible, or simply wait until for the user. Cancel uploads Fine Uploader makes it simple and easy to cancel one or all of the currently uploading files.

Edit file names Allow your users to change the names of the files they are uploading. Provide initial list of files Ask Fine Uploader to display an initial list of files uploaded in a previous session. Multiple upload buttons Support for complex web applications that may have multiple upload inputs. Upload from mobile camera Take a picture and upload it immediately afterward.The code examples in this article use the REST interface and jQuery AJAX requests to add a local file to the Documents library, and then change properties of the list item that represents the uploaded file.

The jQuery document. Add the file to the Shared Documents folder by using the Add method on the folder's file collection. The array buffer is passed in the body of the POST request. Get the list item that corresponds to the uploaded file by using the ListItemAllFields property of the uploaded file. The first example uses SP. AppContextSite to make calls across SharePoint domains, like a SharePoint-hosted add-in would do when uploading files to the host web.

The second example makes same-domain calls, like a SharePoint-hosted add-in would do when uploading files to the add-in web, or a solution that's running on the server would do when uploading files. Provider-hosted add-ins written in JavaScript must use the SP. RequestExecutor cross-domain library to send requests to a SharePoint domain. For an example, see upload a file by using the cross-domain library. Write permissions to the Documents library for the user running the code.

If you're developing a SharePoint Add-in, you can specify Write add-in permissions at the List scope. The context for this example is a SharePoint-hosted add-in that uploads a file to a folder on the host web. You need to meet the requirements listed in the section Running the code examples to use this example.

The context for this example is a solution that's running on the server. The code would be similar in a SharePoint-hosted add-in that uploads files to the add-in web.

You may also leave feedback directly on GitHub. Skip to main content. Exit focus mode. Note You need to meet the requirements listed in the section Running the code examples to use this example. Is this page helpful? Yes No. Any additional feedback? Skip Submit.

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