Detailed explanation of the download function of html

The new project has basically come to an end. It is the first time to complete the integration of front-end and back-end separation. Naturally, there are many pitfalls encountered.

Let’s talk about one of the pitfalls we encountered on the first day.

——About downloading issues. . .

In the past, everyone liked to use the tag. At the beginning, I also used the a tag and the href attribute on the image address to simulate the download function. It turns out that when you click on this ghost thing, it will directly open a new picture, and it is not meant to be downloaded.

Then, I read an article and opened the door to my baby’s new world.

download attribute

The tag must have the href attribute. The browser will automatically detect and add the correct file extension to the file (.img, .pdf, .txt, .html, etc.).

For example:

In fact, you can also customize the downloaded file name

wageSoCute.jpg">

But in fact, this method also has great limitations.

One is its compatibility, according to the data provided by W3C.

It seems that the temporary practicality of this attribute is actually average.

There is another pitfall that I have not stepped into yet, which is the cross-domain issue. I will update it after I have stepped into it. .

To sum up, this download is a good thing, but it seems that the support is not good. I don’t know what its future development will be like. After all, now It's also a new attribute of the a tag. Let's wait and see. Now it's almost enough to at least know that there is such a thing.

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