Video tutorial on the basics 23 Jan 2015 Nat Dunn from Webucator has created a video on FileDrop basics which you can check out. XRequestedWith option 18 Oct 2014 FileDrop class has received opt to change or disable the default X-Requested-With sent by the library, as per. Fixed big file support 8 Jun 2014 Removed obsolete calls to readAsBinaryString (now simulated with readAsArrayBuffer). Also removed fd.toBinary. Verified to work on 60 MiB files in latest Chrome and Firefox. Also added two extra headers when sending files: X-File-Type (MIME) and X-File-Date (GMT; modification date or //now// if unknown). Support for Chrome directories 24 Feb 2014 Added method to File using W3C's draft on (now supported in Chrome 21+).
This is pretty cool — check out the. Thanks to kevinkrouse for the reference. Also added option to DropHandle — when enabled (by default) lets user upload the same file twice in a row but has a slight chance to break your old code.
HTML5,Drag and drop,DnD,File API,Tutorial,Coding.Update #3: Using the techniques outlined in this article I have rolled out and initial release of imgscalr.com.Feel free to download the JS source (it is heavily commented) and take a look aPixelstech, this page is to provide vistors information of the most updated technology information around the world. Drag and Drop file download from Website/Browser to local filesystem. Browse other questions tagged javascript jquery html5 download drag-and-drop or ask your own question. 3 years, 2 months ago. Drag and drop not working in firefox 3.6.
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Thanks to rafaelmaiolla. Upload sample for ASP.Net Web Forms 8 Feb 2014 Options for sendTo 3 Feb 2014 It is now possible to pass an arbitrary object of values to sendTo overriding things like XHR method ( POST by default).
They can also be overriden in. Internet Explorer 10-11 support 30 Jan 2014 Added and verified support for Internet Explorer 10 with its incomplete File API. Internet Explorer 11 is fully supported.
FileDrop — revamped 29 Jan 2014 FileDrop just got a brand-new look and feel. Revised and extended documentation, dedicated website, fully documented code, complete test suite and validation across all possible browsers.
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New features like data reading and Blob slicing. Two years and one day sharp after the first launch. New logo 15 Feb 2013 Thanks to for creating a beautiful new logo! Fixes and features 10 Jan 2013. Now throwing exception when attempting to create a DropHandle on a non-existent DOM node. Fixed support for inputless zones ( DropHandle.opt.input set to null). Added fd.all array containing all instantinated DropHandle objects.
Added on.event - per-zone event previewer for any FileDrop class in addition to global fd.onObjCall jQuery integration 5 Jan 2013 jQuery integration function was added — simply execute fd.jQuery; to plug it into $.filedrop. All zone and file events are available through regular events — $.on('filesend') and so on. More details in. Disabled drag & drop in IE 6-10 5 Sep 2012 Disabled drag & drop for Internet Explorer 10 and below — even if they fire ondrop they actually send empty POST body upon submission. Regular upload is still possible. Thanks to Andreas, listerical85 and others for reporting this.
Also, drag & drop was verified to work in Opera 12.15. Fixed sendAsBinary in Chrome 2 Sep 2012 Fixed sendAsBinary method for Chrome (and possibly others) - thanks to scratchresistor. Fixed in Firefox 13+ 23 Jun 2012 Fixed visual bugs when was used as a drop zone in Firefox 13 and up. First version 28 Jan 2012 Logos & buttons If you like FileDrop you can spread the word with these cute image (feel free to hotlink; ).
Drop a file inside. This sample is identical to that except that upload.php was specified in iframe.url option and a listener was added to the checkbox to update upload URL when its state changes. When user clicks the drop zone and selects one or more files in the Browse dialog FileDrop will upload them by submitting a form that’s automatically created inside the drop zone (but it doesn’t wrap its contents). Query variables are passed differently depending on whether upload happens via xml or not:. if yes, all data is given as multipart/form-data POST. if no, file data is given as raw POST data and custom variables (like in the previous sample) are passed by GET.
Zone-wrapping form In the we had to manually update the xml URL. However, if there are many elements this can be troublesome.
When creating a drop zone FileDrop will first check to see if it already contains a form that can be used for legacy upload. If it does — no extra elements will be created which means that we can wrap all our input fields into a form and when FileDrop automatically submits it to the server as a result of user selecting a file that request will come along with the relevant POST data. For this we can simply copy FileDrpo’s HTML code when it creates a regular drop zone — using Firebug or other tool. Note that we have added name attribute to the checkbox element. Drop a file inside.
Drop-only control Sometimes you’d ditch in favour of drag & drop goodness for Firefox and Chrome (and now Opera). For example, you have a large text area where a user can input text manually but also drop a file to be sent to the server via AJAX. This way you don’t need to create a hidden file input that, when clicked, will allow the user to select files to upload. The server can respond with some modified version of the original file that you will use to populate the area.
This is done by setting input option to false turning drop zone into pure HTML5 upload area. With this iframe and are no more working. Click here to browse for files. Pure HTML5 drop zone The previous example with file input and onchange is a bit oldschool.
We can use HTML5 drag & drop events to catch dropped files without having to select them in a file dialog. We listen to send event just like usual but disable file input creation on this drop zone to be «completely HTML5» (no support for older browsers). Note that files given to send is of the same type as that we obtain from eventFiles in the example above — collection. If we leave input enabled browsers like earlier Opera will trigger onchange event and upload the file via xml instead of letting us read file information on drop.
This post is from, who works on Mozilla’s web development team. Introduction Drag and drop is one of the most fundamental interactions afforded by graphical user interfaces. In one gesture, it allows users to pair the selection of an object with the execution of an action, often including a second object in the operation. It’s a simple yet powerful UI concept used to support copying, list reordering, deletion (ala the Trash / Recycle Bin), and even the creation of link relationships.
Since it’s so fundamental, offering drag and drop in web applications has been a no-brainer ever since browsers first offered mouse events in DHTML. But, although mousedown, mousemove, and mouseup made it possible, the implementation has been limited to the bounds of the browser window. Additionally, since these events refer only to the object being dragged, there’s a challenge to find the subject of the drop when the interaction is completed. Of course, that doesn’t prevent most modern JavaScript frameworks from abstracting away most of the problems and throwing in some flourishes while they’re at it.
But, wouldn’t it be nice if browsers offered first-class support for drag and drop, and maybe even extended it beyond the window sandbox? As it turns out, this very wish is answered by the HTML 5 specification, and of those events. If you want to jump straight to the code, I’ve put together of the new events. I’ve even scratched an itch of my own and built, where every draggable element is also a drop target—of which there could be dozens to hundreds in a complex document, something that gave me some minor hair-tearing moments in the past while trying to make do with plain old mouse events.
And, all the above can be downloaded or cloned from I’ve created expecially for this article. The New Drag and Drop Events So, with no further ado, here are the new drag and drop events, in roughly the order you might expect to see them fired: dragstart A drag has been initiated, with the dragged element as the event target. Drag The mouse has moved, with the dragged element as the event target. Dragenter The dragged element has been moved into a drop listener, with the drop listener element as the event target.
Dragover The dragged element has been moved over a drop listener, with the drop listener element as the event target. Since the default behavior is to cancel drops, returning false or calling preventDefault in the event handler indicates that a drop is allowed here. Dragleave The dragged element has been moved out of a drop listener, with the drop listener element as the event target. Drop The dragged element has been successfully dropped on a drop listener, with the drop listener element as the event target. Dragend A drag has been ended, successfully or not, with the dragged element as the event target. Like the mouse events of yore, listeners can be attached to elements using addEventListener directly or by way of your favorite JS library. Consider the following example using jQuery,.
DataTransfer; dt. SetData ( 'text/plain', $ ( '#logo' ). Text ( ) ); dt. SetData ( 'text/html', $ ( '#logo' ). Html ( ) ); dt. SetData ( 'text/uri-list', $ ( '#logo' ) 0.
Src ); var dt = ev.originalEvent.dataTransfer; dt.setData('text/plain', $('#logo').parent.text); dt.setData('text/html', $('#logo').parent.html); dt.setData('text/uri-list', $('#logo')0.src); On the other end, getData allows you to query for content by type (eg. Text/html followed by text/plain). This, in turn, allows you to decide on acceptable content types at the time of the drop event or even during dragover to offer feedback for unacceptable types during the drag. Here’s another example from the receiving end of the example code. DataTransfer; $ ( '.contenturl.content' ).
GetData ( 'text/uri-list' ) ); $ ( '.contenttext.content' ). GetData ( 'text/plain' ) ); $ ( '.contenthtml.content' ). GetData ( 'text/html' ) ); var dt = ev.originalEvent.dataTransfer; $('.contenturl.content').text(dt.getData('text/uri-list')); $('.contenttext.content').text(dt.getData('text/plain')); $('.contenthtml.content').html(dt.getData('text/html')); Where dataTransfer really shines, though, is that it allows your drop targets to receive content from sources outside your defined draggable elements and even from outside the browser altogether. Firefox accepts such drags, and attempts to populate dataTransfer with appropriate content types extracted from the external object. Thus, you could select some text in a word processor window and drop it into one of your elements, and at least expect to find it available as text/plain content.
You can also select content in another browser window, and expect to see text/html appear in your events. Check out the and see what happens when you try dragging various elements (eg. Images, tables, and lists) and highlighted content from other windows onto the items there.
Using Drag Feedback Images An important aspect of the drag and drop interaction is a representation of the thing being dragged. By default in Firefox, this is a “ghost” image of the dragged element itself. But, the dataTransfer property of the original Event object exposes the method setDragImage for use in customizing this representation.
There’s of this feature, as well as available. The gist, however, is sketched out in these code snippets. DataTransfer; dt. SetDragImage ( $ ( '#feedbackimage h2' ) 0 , 0, 0 ); dt. SetDragImage ( $ ( '#logo' ) 0 , 32, 32 ); var canvas = document. CreateElement ( 'canvas' ); canvas.
Width = canvas. Height = 50; var ctx = canvas. GetContext ( '2d' ); ctx. LineWidth = 8; ctx. MoveTo ( 25, 0 ); ctx. LineTo ( 50, 50 ); ctx. LineTo ( 0, 50 ); ctx.
LineTo ( 25, 0 ); ctx. Stroke ( ); dt.
SetDragImage (canvas, 25, 25 ); var dt = ev.originalEvent.dataTransfer; dt.setDragImage( $('#feedbackimage h2')0, 0, 0); dt.setDragImage( $('#logo')0, 32, 32); var canvas = document.createElement('canvas'); canvas.width = canvas.height = 50; var ctx = canvas.getContext('2d'); ctx.lineWidth = 8; ctx.moveTo(25,0); ctx.lineTo(50, 50); ctx.lineTo(0, 50); ctx.lineTo(25, 0); ctx.stroke; dt.setDragImage(canvas, 25, 25); You can supply a DOM node as the first parameter to setDragImage, which includes everything from text to images to elements. The second two parameters indicate at what left and top offset the mouse should appear in the image while dragging. For example, since the #logo image is 64×64, the parameters in the second setDragImage method places the mouse right in the center of the image.
On the other hand, the first call positions the feedback image such that the mouse rests in the upper left corner. Using Drop Effects As mentioned at the start of this article, the drag and drop interaction has been used to support actions such as copying, moving, and linking.
Accordingly, the HTML 5 specification accomodates these operations in the form of the effectAllowed and dropEffect properties exposed by the Event object. For a quick fix, check out the of this feature, as well as the. The basic idea is that the dragstart event listener can set a value for effectAllowed like so.
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