Reads a boolean attribute the way HTML does for ones that take a value: present-and-empty (auto-start) and "true" are true; "false", "0", "no" and "off" are false; anything else keeps fallback.
auto-start
"true"
"false"
"0"
"no"
"off"
fallback
Reads a boolean attribute the way HTML does for ones that take a value: present-and-empty (
auto-start) and"true"are true;"false","0","no"and"off"are false; anything else keepsfallback.