How to find a parent with a known class in jQuery?

All we need is an easy explanation of the problem, so here it is.

I have a <div> that has many other <div>s within it, each at a different nesting level. Rather than give every child <div> an identifier, I rather just give the root <div> the identifier. Here’s an example:

<div class="a" id="a5">
  <div class="b">
    <div class="c">
      <a class="d">
      </a>
    </div>
  </div>
</div>

If I write a function in jQuery to respond to class d and I want to find the ID for its parent, class a, how would I do this?

I cannot simply do $('.a').attr('id');, because there are multiple class as. I could find its parent’s parent’s parent’s ID but that seems of poor design, slow, and not very polymorphic (I would have to write different code for finding the ID for class c).

How to solve :

I know you bored from this bug, So we are here to help you! Take a deep breath and look at the explanation of your problem. We have many solutions to this problem, But we recommend you to use the first method because it is tested & true method that will 100% work for you.

Method 1

Assuming that this is .d, you can write

$(this).closest('.a');

The closest method returns the innermost parent of your element that matches the selector.

Method 2

Pass a selector to the jQuery parents function:

d.parents('.a').attr('id')

EDIT Hmm, actually Slaks’s answer is superior if you only want the closest ancestor that matches your selector.

Method 3

You can use parents() to get all parents with the given selector.

Description: Get the ancestors of each
element in the current set of matched
elements, optionally filtered by a
selector.

But parent() will get just the first parent of the element.

Description: Get the parent of each
element in the current set of matched
elements, optionally filtered by a
selector.

jQuery parent() vs. parents()

And there is .parentsUntil() which I think will be the best.

Description: Get the ancestors of each
element in the current set of matched
elements, up to but not including the
element matched by the selector.

Method 4

Extracted from @Resord’s comments above. This one worked for me and more closely inclined with the question.

$(this).parent().closest('.a');

Thanks

Method 5

<div id="412412412" class="input-group date">
     <div class="input-group-prepend">
          <button class="btn btn-danger" type="button">Button Click</button>
          <input type="text" class="form-control" value="">
      </div>
</div>

In my situation, i use this code:

$(this).parent().closest('.date').attr('id')

Hope this help someone.

Method 6

Use .parentsUntil()

$(".d").parentsUntil(".a");

Note: Use and implement method 1 because this method fully tested our system.
Thank you 🙂

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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