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    <p>EDIT: You cannot overload operators in current, common browser-based implementations of JavaScript interpreters.</p> <p>To answer the original question, one way you could do this, and mind you, this is a bit of a hack, simply <a href="https://github.com/douglascrockford/JSON-js/blob/master/json2.js" rel="nofollow noreferrer">serialize the two arrays to JSON</a> and then compare the two JSON strings. That would simply tell you if the arrays are different, obviously you could do this to <em>each</em> of the objects within the arrays as well to see which ones were different.</p> <p>Another option is to use a library which has some nice facilities for comparing objects - I use and recommend <a href="http://www.mochikit.com/" rel="nofollow noreferrer"><strong>MochiKit</strong></a>.</p> <hr> <p><strong>EDIT:</strong> <a href="https://stackoverflow.com/questions/27030/comparing-arrays-of-objects-in-javascript#27932">The answer kamens gave</a> deserves consideration as well, since a single function to compare two given objects would be much smaller than any library to do what I suggest (although my suggestion would certainly work well enough).</p> <p>Here is a naïve implemenation that may do just enough for you - be aware that there are potential problems with this implementation:</p> <pre><code>function objectsAreSame(x, y) { var objectsAreSame = true; for(var propertyName in x) { if(x[propertyName] !== y[propertyName]) { objectsAreSame = false; break; } } return objectsAreSame; } </code></pre> <p>The assumption is that both objects have the same exact list of properties.</p> <p>Oh, and it is probably obvious that, for better or worse, I belong to the only-one-return-point camp. :)</p>
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    1. USJason Bunting
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    1. COJust to point out the limitation: This looks like it will fail when comparing objects that contain objects. (And as you mention, it will fail when the two objects do not have “the same exact list of properties,” as `y` is allowed to be a super-set of `x`.
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    2. COOne caveat regarding the JSON serialization suggestion is that if you are comparing objects (not arrays) and don’t care about the order (e.g. named keys, not a numerical array), well, then JSON serialization won’t work.
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