When the CharacterData API is used to delete, append, insert or replace characters, the appropriate text removed/inserted events should be fired, with only the changed substrings. Screen readers would then only read the substring changes instead of the entire text node.

Steps:
1. Load the attached file with a screen reader
2. Press "cat" or "dog" button

The word "cat" or "dog" should be spoken, but the entire sentence is read -- "The ___ is named Franky".
 

Deleted: live-characterdata.html 862 bytes

live-characterdata.html 862 bytes View Download