javascript $ symbol?

Question

why $ symbol is used in javascript? i want to know what it specify?

In what context? Can you provide some Javascript code snippet involving a `$` in your question? If you're talking about code like `$("#data[select]").val();`, then it's probably jQuery, but that's not necessarily true in all cases. — In silico, Apr 24 '11 at 00:22
Without context (where did you see it used?) this question cannot be reasonably answered. Voting to close as 'not a real question.' — David Thomas, Apr 24 '11 at 00:23
`$` is a legal character for a variable name in JS. It's often used as a shorthand version of something you call a lot, like the jQuery object. You can use it for wvatever you want. Same happens with the `_` character in PHP (it's an alias for the `gettext()` function). — mingos, Apr 24 '11 at 00:26
Possible duplicate: http://stackoverflow.com/questions/3107543/what-is-the-symbol-used-for-in-javascript — malgca, Aug 31 '13 at 13:16

score 16 · Answer 1 · answered Apr 24 '11 at 00:22

16

You may be looking at jQuery code. $ is a variable (in jQuery's case it's a shortcut for 'jQuery').

answered Apr 24 '11 at 00:22

Paul

score 6 · Answer 2 · answered Apr 24 '11 at 00:24

6

You may well be looking at JavaScript written by a PHP programmer!

answered Apr 24 '11 at 00:24

Christo

score 3 · Answer 3 · answered Apr 24 '11 at 00:23

3

It's used as a namespace in jQuery. It's also a pseudonym for the jquery object .

answered Apr 24 '11 at 00:23

duffymo

3 Answers3