Web Accessibilityのすすめ
JSConf JP 2019
Nazanin Delam
Senier SWE @Netflix
The power of Web is in its universality
Disability
~15%
~1.1B people
a11y
AT
assistive technology
WCAG
Web Content Accessibility Gudelines
NEF - No Extra Effort
semantics
div,span = no meanings
others = has meanings
colors
Lighthouse tests accessiblities
color-adjust css property
A11y Tree
can see on Developer tool
MEF - Minimmal Effort
use interactive ad meaningful elements
Don't use CSS Outlines
Provide Skip links
Manage your website focus state
Announcements
role="alert"
Inclusive Experience
we don't test on devices people actually use