HTML4とHTML5の違い

HTML5 differences from HTML4
まだドラフトなのかな、とりあえずまとまっていたけど。

なんかAPIだけでも結構違っていたね。どうなんだろ。

4. APIs HTML5 introduces a number of APIs that help in creating web applications. These can be used together with the new elements introduced for applications: * 2D drawing API which can be used with the new canvas element. * API for playing of video and audio which can be used with the new video and audio elements. * Persistent storage. * Online / offline events. * Editing API in combination with a new global contenteditable attribute. * Drag & drop API in combination with a draggable attribute. * Network API. * API that exposes the history and allows pages to add to it to prevent breaking the back button. * Cross document messaging. * Server sent events in combination with the event-source element.