Assuming the following:
<div class="a"> <!-- select -->
<div class="b">
<div class="a"> <!-- skip -->
</div>
</div>
</div>
<div class="b">
<div class="a"> <!-- select -->
<div class="b">
<div class="a"> <!-- skip -->
</div>
</div>
</div>
</div>
<div class="a"> <!-- select -->
</div>
How do I only select the outermost $('.a') elements?
Edit: A helpful JSFiddle, in this example, only 'a' should be selected, not 'a!'.