查找没有直属子类的元素

Question

In a page of HTML elements, I am trying to find a parent element with class .dmc that does not contain a direct child element with a specific class .dynamic , using JQuery.

I have tried:

$('.dmc:not(:has(.dynamic))')

However this checks all descendants, and I only want to check the first level of descendants.

I think there is a very simple answer, but I can't quite come up with it. Any help appreciated!

Answer 1

Since :has is already jQuery-specific, you could use an unrooted > , which jQuery's Sizzle selector engine seems to support:

$(".dmc:not(:has(> .dynamic))").addClass("green");
// --------------^

 $(".dmc:not(:has(> .dynamic))").addClass("green"); 

 .green { color: green; font-weight: bold; } 

 <div class="dmc">1</div> <div class="dmc">2 <div class="dynamic">dynamic</div> </div> <div class="dmc">3</div> <div class="dmc">4 <div class="dynamic">dynamic</div> </div> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> 

But I'd be slightly worried about it, and would probably go for filter instead:

$(".dmc").filter(function() {
  return $(this).children(".dynamic").length == 0;
}).addClass("green");

 $(".dmc").filter(function() { return $(this).children(".dynamic").length == 0; }).addClass("green"); 

 .green { color: green; font-weight: bold; } 

 <div class="dmc">1</div> <div class="dmc">2 <div class="dynamic">dynamic</div> </div> <div class="dmc">3</div> <div class="dmc">4 <div class="dynamic">dynamic</div> </div> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>