Javascript "$" meaning before a variable or namespace
<p>Anybody knows what is the meaning of the $ sign before an object attribute.</p>

<p>For example:
 pages.$page</p>

<p>I've seen in some javascript codes and I'm not sure if it using some kind of framework.</p>

<p>I've used something like this (this.$el) to access to cached element in Backbone.</p>

<p>Thanks in advance!</p>
