Following this post, I am trying to bind a keydow event handler on all dynamically elements which id starts with id_phone- and finished with -value. For example, id_phone-3-value should math, whereas id-phone-3-value should not. 
To achieve this, I tried to come up with the code below:
$(document).on('keydown', '[id^=id_phone-_][id$=_-value]', function(){
   console.log('test');
});
...which, unfortunately, does not work for me. What am I doing wrong here ?
 
     
    