Dynamic deep selection for a JavaScript object

Question

With a single property this is fairly easy:

var jsonobj = {
    \"test\": \"ok\"
}
var propname = \"test\";
// Will alert \"ok\"
alert(jsonobj[propname]);
<         


        

Answer 1

This works, but rather suckily uses eval so I'm not recommending it's use:

var jsonobj = {
    "test": {
        "test2": "ok"
    }
}
var propname = "test.test2";
alert(eval("jsonobj." + propname));
​

Try it here: http://jsfiddle.net/TAgsU/