jQuery addClass仅添加第一个元素的类

Question

I want to add a class to all elements which have a defined class name.

There is my code:

$(settings.slidesPlaceholder + ' ' + settings.slideIdentifier)
        .removeClass('active-slide')
        .addClass('inactive-slide');

But the issue is that the class is added only for the first element, but is removed from all elements.

Answer 1

Please just make sure, you are not using id attribute for changing class .

For example:

$("#divid").removeClass('a').addClass('b');
$(body).removeClass('a').addClass('b');

The above will gonna add Class only to one element.

$(".cldiv").removeClass('a').addClass('b');

The above will update all elements with class cldiv .

So just console.log your settings.slidesPlaceholder+''+settings.slideIdentifier

and see whether its a class , id or element .