find({abc:1,def:{ghi:"hi"}}, “ghi”) // finds the full object path to "def.ghi"

findObject.js

/*global console*/
function find(target, searchFor, path) {
    "use strict";
    try {
        path = path || "";
        var i, attr, attrs = Object.keys(target);
        searchFor = searchFor.toLowerCase();
        for (i = 0; i < attrs.length; i += 1) {
            attr = attrs[i];
            if (attr.toLowerCase().indexOf(searchFor) >= 0) {
                console.log((path + '.' + attr).substr(1));
            }

            if (target[attr] && typeof target[attr] === "object") {
                find(target[attr], searchFor, path + "." + attr);
            }
        }
    } catch (e) {
        console.log(target, searchFor, path, e);
    }
}