Screen reader users rely on the iframe title attribute to describe the contents of iframes. A meaningful title attribute allows to quickly identify the iframe content, so users can determine which iframe to enter and explore in detail or skip if desired.
Note: this is the only case where a title attribute is required for compliance with the W3C Web Content Accessibility Guidelines (WCAG).
- checks for oEmbed response of type `video` or `rich`
- checks if they use an iframe
- fetches the title (if any) from the oEmbed response
- adds the title to the embed iframe
Props bamadesigner, TomHarrigan, swissspidy, jrf, afercia.
Fixes#40245.
git-svn-id: https://develop.svn.wordpress.org/trunk@44942 602fd350-edb4-49c9-b593-d223f7449a82
7834856fcb