Detailed introduction to drag and drop to upload images

This article mainly introduces HTML5+CSS3 to implement drag-and-drop upload of images without plug-ins (supports preview and batch). Now html5 provides API and powerful APIs such as File, FileReader, XMLHttpRequest, etc., which provide us with drag-and-drop upload. possible. Those who are interested can find out. Uploading is basically something that often occurs in projects. It is generally used: 1. form submission 2. flash3, HTML5 form submission will refresh the page, and it is difficult to upload asynchronously; flash may be used more because it can take into account almost all browsing I have always used jQuery's uploadify as the upload tool in the project. Uploadify is also based on Html5 and seems to be charged. You can go to the official website to take a look. Of course, now html5 provides API and powerful functions such as File, FileReader, XMLHttpRequest, etc. API provides the possibility for us to drag and drop to upload. Rendering 1: Rendering 2: Because the local upload is too fast, I recorded an 80M gif, and finally you can see the detailed effect of the upload.

1. HTML5+CSS3 implementation Detailed introduction to dragging and dropping pictures to upload without plug-in (supports preview and batch)

Introduction: This article It mainly introduces HTML5+CSS3 to realize drag-and-drop uploading of images without plug-ins (supports preview and batch). Now html5 provides API and powerful APIs such as File, FileReader, XMLHttpRequest, etc., which makes it possible for us to drag-and-drop to upload images. Those who are interested can find out.

2. HTML5/CSS3 classic case - drag and drop to upload images without plug-in (2)

Introduction: The previous article has implemented the overall HTML and CSS of this project: HTML5 CSS3 Classic case: Drag and drop to upload images without plug-ins (supports preview and batch) (1) This This blog is directly based on the previous one. The final effect is: Effect Picture 1: Effect Picture 2: Okay, please allow me to post the picture twice so that everyone can see the effect~ You can see the li of our picture. HTML is actually quite complicated, so I made some modifications to the html document:

3. HTML5/CSS3 classic case - drag and drop upload of images without plug-in (1)

Introduction: form submission will refresh the page, making it difficult to upload asynchronously; flash may be more useful More, because it can take into account almost all browsers. I have always used jQuery's uploadify as the upload tool in the project. Uploadify is also based on Html5 and seems to be paid. You can go to the official website to take a look; of course, now html5 provides API and powerful APIs such as File, FileReader, XMLHttpRequest, etc. provide the possibility for us to drag and drop to upload.

4. JS HTML5 drag and drop upload image preview

##Introduction: This article mainly introduces the relevant information of JS HTML5 drag and drop upload image preview in detail. It has certain reference value. Interested friends can refer to it

5. html5 Drag and drop upload image example demonstration_html5 tutorial skills

I refer to a foreign photo album for the interface style The website has not changed much, except that the birdsong has been converted into Chinese, and the style of uploading has also been changed. The reason why I chose this is that it is easy for me to expand. It supports 3 ways to add pictures, one is drag and drop. Upload, a conventional option" width="400">

Introduction: The most important thing about drag-and-drop upload is the js part of the code, which implements 70% of the functions. In addition 30% just submit the image information to the background, and then perform corresponding processing, such as compression, cropping, etc. Friends who are interested can refer to it. I hope it can help you

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