ARIA
What
Use ARIA, Accessible Rich Internet Applications, to mark-up dynamic Web content for accessibility.
Why
Interactive elements in the code of a web page are not always easy for assistive technology to understand and present. Use of ARIA makes code easier for assistive technology to understand, especially when it comes to JavaScript. ARIA is used to cue in assistive technology to better return data to the user.
How
Use ARIA tags for dynamic content. For more information, visit the WCAG links for this topic.