Two common methods for jquery to verify whether an element is empty _jquery

The examples in this article describe two common methods for jquery to verify that the element is empty. Share to everyone for your reference. Specifically as follows:

The following provides two methods for checking whether the contents of an element of the specified ID are null

Method one
if (!$ (' #jb51 '). HTML ()) {
//http://www.jb51.net nothing found;
}

Method two
if ($ (' #jb51 '). Is (": Empty")) {
//http://www.jb51.net found nothing;
}

I hope this article will help you with your jquery programming.