I want to select all the elements that have the two classes a and b.
<element class="a b">
So, only the elements that have both classes.
When I use $(".a, .b") it gives me the union, but I want the intersection.
If you want to select an element with multiple classes in jQuery then just write the selectors together without spaces in between them like below:-
Another thing the order is not relevant, so you can also swap the classes: