The $ dollar sign

Question

I have something simple like this:

$(selector).append("somestuff");

But since I\'m going to reuse the selector I cache it with:

Answer 1

In this case, $selector is an example of Hungarian notation. It is there so that you know that $selector is a jQuery object.

If you make it your custom to always have jQuery objects start with $ if you suddenly use one wrong it will look wrong which will help you find a problem in your code.

The language couldn't care less. They could have just as well named the jQuery function J or anything else; the $ is not a special symbol.