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Dragdrophandling of drag and drop functionsAbout HTML5 drag -and-drop file upload, in fact, there are many overseas sites have such applications, the earliest introduction of drag-and-drop
Take a look at the drag-and-drop effect on the web today, and first look at what drag-and-drop ————Drag and dropDrag-and-drop is a common feature that grabs an object and then drags it to another location.In
Before HTML5, if you want to implement drag-and-drop effect, generally use MouseDown, MouseMove and MouseUp three events to simulate the drag-and-drop effect, more trouble. The HTML5 specification realizes the primary
Drag and dropDrag-and-drop is a common feature that grabs an object and then drags it to another location.In HTML5, drag-and-drop is part of the standard, and any element can be dragged and dropped.Browser supportInternet Explorer 9, Firefox, Opera 12, Chrome, and Safari 5 s
When talking about drag and drop, I think of a very interesting effect during JavaScript training, that is, drag and drop. You can drag an object to any place you want.
The earliest JavaScript drag-and-
",
//disallows:".exe"
/ / Each time the upload will be sent parameters (POST mode)
Data: { user: "Devin" }
});
See the sample code or Github (feel the force of the lattice instantly improved with wood, * ^_^ *)
Https://github.com/devin87/web-uploader
Code download
ASP. NET or other background sample code
node. JS Sample Code
Say in the end
If this article or the project is helpful to you, please do not hesitate to praise. If you have any com
Comments: The most important part of drag-and-drop upload is the js Code, which implements 70% of the functions. The other 30% only submits the image information to the background and then processes the image, such as compression, for more information about cropping and cloud, please refer to the following. I hope you will not explain this because the title is an instance, this is because I have integrated
Because the title is written into an instance, I will not explain it this time, because this instance is also made up by us. I have referenced about 5 and 6 plug-ins and demos for drag-and-drop upload, then pick out the good place, and finally become such an instance, let's take a look at it together (the address cannot guarantee long-term effectiveness, if the failure please click at the end of the article
This article mainly introduces the object and event information related to the drag-and-drop operation, but does not involve too many source code demonstrations.A simple exampleIn the HTML5 to implement drag-and-drop operation, relative to the previous implementation through
Now, there are a lot of new HTML5 elements, but also a lot of convenience for developers, such as: Structure tag header, nav, arctile, section, footer form elements: URL, date, emaile, search, tel, range, Color, DataList, progress, meter, output, and so on, there are some webstroge elements, drawing elements, drag-and-drop APIs, and so on, here is a focus on the
Drag-and-drop is a common feature that crawls objects and then drags them to another location. In HTML5, drag is part of the standard, and any element can be dragged and pulled. HTML5 Drag a very common function, but most of the
In the HTML5 to implement drag-and-drop operation, relative to the previous implementation through the mouse operation, it is much simpler, data security is more secure. It takes only a few steps to do this.
Adds an attribute to the dragged element draggable , if it is a file drag and
This paper is the official HTML5 training course for Brother Lian it education organization, mainly introduces: HTML5 Mobile Development Road (16)--Magical drag and drop functionIn the rapid development of smart phones now drag-and-drop
HTML5 Code Case StudyHTML5 code has a id,id= "Tuo", there is a ondragstart= "drag (Event)" Property, then this is what the meaning of it, it is followed by a function drag (event), This means that the function is called when we start to drag, and we can see the dragstart here, which is the action that we started to
Drag-and-drop is a common feature of dragging objects to another location, in HTML5, where drag and drop is part of the standard and any element can be dragged and dropped.1. HTML5 Drag
piece of text, then call the SetData method to save the text in the text format, drag the picture will be in the format of the URL to save the data. Event.dataTransfer.setData ("text", "some text"); Working with textvar text = event.dataTransfer.getData ("text");Event.dataTransfer.setData ("URL", "http://www.wrox.com/"); Working with a URL (image)var url = event.dataTransfer.getData ("url"); This is the beginning of IE allows the two type
HTML5 + CSS3 implement drag-and-drop upload of images without plug-ins (PreView and batch upload are supported ),
Upload is usually used in projects:
1. form submission
2. flash
3. HTML5
Form submission refreshes the page, making it difficult to perform asynchronous uploads. flash may be used a lot, because it can take
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