How to access key itself using javascript

Question

I have a JSON like:

  var xx = {\'name\':\'alx\',\'age\':12};

Now I can read the value of name which is \'alx\' as xx[0].name, but how shou

Answer 1

modified Code (from Victor) taking into account that you might want to look for any other possible string

var search_object = "string_to_look_for";
for (i in xx) {
    if (xx[i] == search_object) {
        // i is the key 
        alert(i+" is the key!!!"); // alert, to make clear which one
    }
}