You can not communicate directly between Angular and MySQL. You'll need to build a back-end Web service that calls MySql using php or node. Angular can communicate with this back-end Web service via http.
It can penetrate the blood-brain barrier.
Answer:
Uh I don't understand what you said.
Explanation:
N/A
IsTeenager = ( ( kidAge >= 13 ) && ( kidAge <= 19 ) ) ? true : false;
Another way:
if( ( kidAge >= 13 ) && ( kidAge <= 19 ) )
isTeenager = true;
else
isTeenager = false;