why is a comma used before "contents"

Question

I saw the following snippet in a jquery code, but I don't understand why it uses a comma right before 'contents' instead of a period.

var that = $(this),
contents = that.serialize();

Does anyone have an idea why a comma is being used?

I am missing the words to search properly I think.

"Comma Trick" reference: http://blog.vjeux.com/2011/javascript/javascript-comma-trick.html — showdev, Aug 29 '13 at 22:05
`var`: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/var — Ian, Aug 29 '13 at 22:10

score 4 · Answer 1 · answered Aug 29 '13 at 22:03

4

same as :

var that = $(this);
var contents = that.serialize();

answered Aug 29 '13 at 22:03

TecHunter

Thanks alot you both, I am new to this thanks! Sorry if this was a duplicate, but without the proper knowledge this is hard for a newbie to see. – JSnewb Aug 29 '13 at 22:06

score 4 · Answer 2 · answered Aug 29 '13 at 22:03

4

You can use it to declare multiple variables, it's just shorthand for:

var that = $(this);
var contents = that.serialize();

Many other languages support the same.

answered Aug 29 '13 at 22:03

Mathew Thompson

1

haha was 1s faster :p – TecHunter Aug 29 '13 at 22:03
1

LOL +1 to you anyway, what's 1 second hey? :) – Mathew Thompson Aug 29 '13 at 22:04
1

true, maybe 25rep? :p – TecHunter Aug 29 '13 at 22:04
1

@mattytommo -- inch or a mile my friend :D – tymeJV Aug 29 '13 at 22:04
Thank you also for answering – JSnewb Aug 29 '13 at 22:09

2 Answers2