why put $ with $self and $body? And is self the same as $self
jquery, syntax
Solution
$self has little to do with $, which is an alias for jQuery in this case. Some people prefer to put a dollar sign together with the variable to make a distinction between regular vars and jQuery objects.
example:
var self = 'some string';
var $self = 'another string';
These are declared as two different variables. It's like putting underscore before private variables.
A somewhat popular pattern is:
var foo = 'some string';
var $foo = $('.foo');
That way, you know $foo is a cached jQuery object later on in the code.
Problem
I'm learning jQuery by trying to understand other people's code. I ran into this: ``` jQuery.fn.myFunc = function(options, callback) { //stuff jQuery(this)[settings.event](function(e) { var self = this, $self = jQuery( this ), $body = jQuery( "body" ); //etc. } //more stuff } ``` My understanding is that `$` refers to the jQuery object. So why put `$` with `$self` and `$body`? And is `self` the same as `$self`?