Graceful degradation)
Focus: build Web applications with good experience on the latest browsers.
Downgrade: the old version of the browser provides a satisfactory experience without affecting the use of the function.
Progressive enhancement)
Focus: content, which is the basis for creating web applications.
Enhanced: provides visual experience and interactive experience in a better way.
. Thinking
The ultimate goal of elegant downgrading and progressive enhancement is the same, and the construction of Web applications that can run well on various device browsers. Their differences are their respective concerns and their impact on the workflow. It's easy to think about progressive enhancement. First, build solid content, and then add styles and interactions. The progressive enhancement model should be promoted more. I feel like very nice in the workflow of this model!