$ at the beginning and at the end of variable
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/205853/why-would-a-javascript-variable-start-with-a-dollar-sign">Why would a JavaScript variable start with a dollar sign?</a>  </p>
</blockquote>



<p>I realized some syntax with jquery and didnt know what it is. here goes:</p>

<pre><code>var $foo = $("bar").blah();

var hello$ = $("stgelse").etc();
</code></pre>

<p>What is the difference between these? and why are they like that?</p>

<p>Also, For example: </p>

<pre><code>var $foo = $("").blah();
</code></pre>

<p>var should already contain whatever right side is returning ? no?</p>

<p>Can you please elaborate?</p>
