Accessibility of Web Components
summary
Argues that Web Components must carry real semantics not just new tags, shows a working taco-button custom element that extends HTMLButton, registers lifecycle callbacks, adds role and tabindex and responds to Enter key (demo works but shows keyboard latency). Demonstrates shadow root encapsulation for a multi-part slider/explosion control to avoid CSS/JS conflicts. Uses X-Tag polyfill (IE9+ support) and the Polymer shim 163 KB to broaden browser coverage; native support exists in Chrome/Opera and Firefox nightly.
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chapters (21)
- 0:00Start
- 2:40Web Components
- 2:53Marcy Sutton
- 4:59What Are Web Component
- 5:33Html Imports
- 6:31Why Are We Excited about Web Components
- 11:44Autocomplete Widget
- 15:29Polyfills
- 16:27Life Cycle Callbacks Methods
- 18:26Use Native Child Elements
- 19:50Attributes
- 22:24Would Adding the Role in the Jas Result in a Buffering Issue and the Assistive Technology
- 25:48Shadow Dom What Is Shadow Dom
- 26:54Apply Author Styles
- 27:53Shadow Host
- 30:52Add Shadow Dom to an Existing Element
- 31:27Shadow Dom Widget
- 32:09Shadow Dom Element
- 33:33Shadow Dom
- 35:56Current Support of Shadow Dom Chrome 25
- 38:23Resources
