Question

I want to add and remove class disabled on button click.
I tried to add it using but var r is not assigned correctly to the div.

var r = $("div.radio.ui-buttonset");
        alert(r)
        if(r) {
            r.className += r.className ? ' disabled' : 'disabled';
        }

HTML

<div class="input radio optional ui-buttonset">
   radio buttons
</div>

Desired HTML result on click:

<div class="input radio optional ui-buttonset disabled">
   radio buttons
</div>

Desired HTML result another click: (back to original)

<div class="input radio optional ui-buttonset">
   radio buttons
</div>

Answer 1

$('div.radio.ui-buttonset').toggleClass('disabled');

Good luck!