Access object child properties using a dot notation string [duplicate]

Answer 1

Short answer: No, there is no native .access function like you want it. As you correctly mentioned, you would have to define your own function which splits the string and loops/checks over its parts.

Of course, what you always can do (even if its considered bad practice) is to use eval().

Like

var s = 'b.b2';

eval('r.' + s); // 99