Comparing classes of items to execute function(variable variable?)

In Jquery, I want to compare the classes of an h3 and a div. However, I have a lot of these and I can't go through and do case switches because more of these may be added in the future. Here is an example:

<h3 class="one">One</h3>
<h3 cl开发者_高级运维ass="two">Two</h3>
<h3 class="three">Three</h3>
<div class="one">One</div>
<div class="two">Two</div>
<div class="three">Three</div>

On clicking the h3, the div will toggle show/hide. However, as I said, there are a lot of these. Is there any way to say in Jquery that

if h3[class] = div[class] {
       //do something
}

without having to state each case of class comparison? Maybe a variable or something?

Given h3 and div are DOM nodes and only have one class each

if (h3.className === div.className) {
    /* runs if both h3 and div have the same class attribute value.
}

For multiple classes I recommend you use ES5 and classlist

if (Array.prototype.every.call(h3.classList, function(v) {
        return div.classList.contains(v);
    })
) {
    /* runs if both h3 and div share the same classes */
}

.classList, Array.prototype.every, ES5-shim