jQuery Checkbox class attribute

Question

how do you access the class attribute of a <asp:Checkbox> in a jQuery selector statement?

for example

<asp:CheckBox runat="server" ID="cbTest" Text="Cb Test" FieldName="1st Test Check Box" class="toggleBox"/>

this:

$(':checkbox').toggleAttr("checked", true, false)

accesses the checkbox and applies a custom function to the checked attribute but if i want to filter based on a certain class how do i access/filter based on that?