Trailing commas in Object/Array literal about javascript HOT 6 CLOSED

@felixsanz yup! we switched to Babel which removes trailing commas and we get the added benefit of cleaner diffs. https://github.com/airbnb/javascript#19.2

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Just watch out for IE browsers. If your last element is followed by coma IE will expect another element there (probably will whine about expecting object). Was a bit of hell back in the days of IE6...

It will give you trouble mostly ;) in IE6/IE7.

UPDATE: Of course I don't recommend it! Sorry for any confusion :)

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IE7 throws error, also beware that IE9 in quirks mode (imagine a website that has no DOCTYPE) will throw the same error. I would not recommend this.

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I would not recommend it as well. It has the potential to cause more trouble than the benefit it gives you.
Some implementations would actually add length to an array with a trailing comma:

Edition 5 clarifies the fact that a trailing comma at the end of an ArrayInitialiser does not add to the length of the array. This is not a semantic change from Edition 3 but some implementations may have previously misinterpreted this.

Source: http://es5.github.io/#D

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Thanks for your comments. I think I will still keep this style in my projects (front-end and back-end). Since I am using the RequireJS optimizer module which removes trailing commas, I can avoid the compatibility issues while using this syntax sugar.

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@hshoff So now this changed?

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