Question

Why doesn’t this work

$('div.note')[0].removeClass('hidden');

I get this error from firebug:

TypeError: note.removeClass is not a function

Answer 1

$('div.note')[0] gives you a javascript object, not a jQuery object, and removeClass is a jQuery method. You need to convert it to a jQuery object before using jQuery methods.

Try this,

$($('div.note')[0]).removeClass('hidden');

or

$('div.note').eq(0).removeClass('hidden');