How to copy/clone a hash/object in JQuery?

Question

I have a simple object (or hash) in Javascript:

var settings = {
  link: 'http://example.com',
  photo: 'http://photos.com/me.jpg'
};

I need a copy of it. Is there a settings.clone() type method that will give me another object with the same attributes? I'm using jQuery, so happy to use a jQuery utility method if one exists.

Answer 1

Yes, extend an empty object with the original one; that way, everything will simply be copied:

var clone = $.extend({}, settings);

---

Extending some filled object with another, e.g.:

$.extend({a:1}, {b:2})

will return:

{a:1, b:2}

---

With the same logic:

$.extend({}, {foo:'bar', test:123})

will return:

{foo:'bar', test:123}

i.e. effectively a clone.