使用jQuery检查类是否存在

Question

Is there a way to see if a layer has a sub layer with a specific class.

so in my html i have;

html

<div class='tab'>
   <div class='not-loaded'></div>
</div>

JS/JQ

$('.tab').contains('not-loaded'); //to return a Boolean OR
$('.tab').classExist('not-loaded'); //to return a Boolean

Basicly I want to check if my tabs have already loaded the dynamic html content.

Answer 1

Test for length using find

if($('.tab').find('.not-loaded').length)

Or using has

if($('.tab:has(".not-loaded")').length)

Answer 2

您也可以将：first-child与选择器一起使用。

$('.tab :first-child').hasClass('not-loaded');