Unobtrusive Javascript、Progressive Enhancement、Gracefully Degrade

从几个与 DOM 脚本编程有关的术语翻译说起

为了给用户更佳的体验，我想做到 Progressive Enhancement。然而，要是人家浏览器不支持怎么办？好吧，那就 Gracefully Degrade 吧。换句话说，Progressive Enhancement 是代表美好理想的新体验，而 Gracefully Degrade 则是面对残酷现实的替代品。

Unobtrusive Javascript
From DHTML to DOM scripting - an example of how to replace outdated JavaScript techniques.