jQuery Follow/Following Buttons
http://forrst.me/jakiestfu
by Sakib Ahmed
HTML
<button class='follow'>Follow</button>
JavaScript
$("body").on('click', ".follow, .unfollow", function (e) {
e.preventDefault();
$button = $(this);
$button.toggleClass('unfollow').toggleClass('follow');
$button.text($button.hasClass('follow') ? 'follow' : 'unfollow');
});