Question

Let me try to explain this, I have a string like this:

"b.c"

And an object like this:

a = {
    b:{
        c:2
    }
}

I would like to use that string to get the c property, but using this doesn’t work:

a["b.c"]

How can I use the "b.c" string to work just like a.b.c? (Without using eval, perfomance is important in my case)

Answer 1

What about something like this:

function load(path) {
    var steps = path.split('.');
    var level = this;
    for(var i=0;i<steps.length;i++) {
        level = level[steps[i]];
    }
    return level;
};

var value = load(a, 'b.c');