javascript - How is Zhihu's image loading implemented?

Question

See the Zhihu document. How to evaluate Visual Studio Code?

There is an interesting feature on the page. Before the image is loaded, a white canvas will be displayed. Then, a picture that looks like a Gaussian blur will be displayed, and finally it will be displayed clearly. picture of

This is interesting, how is it implemented, or are there any ideas to achieve this?

Answer 1

Same problem
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