TinyMCE, allow data attribute

Question

I have to use the HTML 5 data attribute in Tiny MCE, but the editor always clear them, as it\'s not an attribute known by the default valid_elements configuration.

S

Answer 1

I am using:

extended_valid_elements: "+@[data-options]"

and it works for me. (TinyMCE 4.3.11. Notice the + sign?)