Access attribute of a JS object using the key of another attribute

Question

I’m trying to get the value inside a given object using the key of another object: Ex:

I have the objects:

var obj1 = { id:'gh73f'}

var obj2 = {
    gh73f : 123,
    h39sg : 764,
    c9wer : 921
}

I tried to:

var valor = obj2[obj1.id];

and

var valor = obj2[obj1[id]];

In none of the cases can I get the key value gh73f of obj2.

Answer 1

Do the following use the eval, mount the string and after the eval for it to execute as code:

var valor = eval("obj2."+obj1.id);