posted 7 years ago
Hey Qunfeng,
There is no specific chapter on accessibility, but it's brought up as applicable throughout the book. For example the section on button widget discusses how jQuery UI builds accessible buttons; the section on icons discusses how to use icons in a screen-reader friendly manner; the section on form validation discusses how to build accessible form validation; and so forth.
Accessibility is very important to jQuery UI. We work with accessibility groups to improve the usability of our widgets and we're always open to pull requests from the community to address any accessibility shortcomings.
TJ