Retrieve a property from an object given a key path.
var obj = {
name: "Kalle",
address: {
street: "East 13th Street",
city: "New York"
}
};
alert (Dexie.getByKeyPath(obj, "name")); // Will alert "Kalle";
alert (Dexie.getByKeyPath(obj, "address.street")); // Will alert "East 13th Street";