Enhanced Editing with Input Events

Today, the easiest way to create a rich text editor on the web is to add the contenteditable attribute to an element. This allows users to insert, delete and style web content and works great for many uses of editing on the web. However, some web-based rich text editors, such as iCloud Pages or Google Docs, employ JavaScript-based implementations of rich text editing by capturing key events using

[koba04]

contenteditable

[efcl]

InputEventについて。 `beforeinput` event.