What unusual characters in addition to $ are allowed in JavaScript identifiers?

Question

I want a variable like $ that is sort of special, but I'm already using jQuery, so $ is taken.

You could always run JQuery in compatibility mode and type in jQuery instead of $. — epascarello
– epascarello, Commented Jul 18, 2009 at 3:56

Brian Ramsay · Accepted Answer · 2009-07-18 01:14:08Z

6

Unfortunately, older javascript supports letters, numbers, underscores, and $ in identifiers. In javascript 1.5 and later you can use Unicode characters, but that would be a very bad idea as they can be a pain to enter into most editors, and certainly aren't something you would want to have to type very often.

Source

answered Jul 18, 2009 at 1:14

Brian Ramsay

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Nosredna Over a year ago

That's the source I was looking at. :-)

Ionuț G. Stan · Accepted Answer · 2012-04-23 16:05:02Z

5

The one I like it best:

λ = Function;

Unfortunately it's very difficult to type it.

edited Apr 23, 2012 at 16:05

answered Jul 18, 2009 at 1:19

Ionuț G. Stan

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Comments

aem · Accepted Answer · 2009-07-18 02:35:31Z

2

If you want a special variable like $ but $ is already taken by jQuery, why not use something that starts with $, like $a or similar? Just make sure it's one that jQuery doesn't also define.

answered Jul 18, 2009 at 2:35

aem

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Ionuț G. Stan Over a year ago

jQuery can handle $ conflicts, so $ could be just fine. After all, jQuery borrowed the dollar from prototype.js

Nosredna · Accepted Answer · 2009-07-18 01:13:19Z

2

Underscore is the only one I can think of. You can put a few together like _$_.

Starting in JavaScript 1.5, you can use Unicode such as å.

answered Jul 18, 2009 at 1:13

Nosredna

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Comments

Justin Johnson · Accepted Answer · 2009-07-18 04:07:27Z

1

Prototype uses $ and a $$. If you're using jQuery, you could use $$. However, unless its really well documented, this may be a bad idea--especially if someone else has to maintain this code after you've moved on.

answered Jul 18, 2009 at 4:07

Justin Johnson

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