Jquery data attribute change and affect CSS

Question

I'm using a data attribute in my css however when I change it via jquery it's not changing on screen on in the dom.

$('#new-1').data('count', 5);

.fa-stack[data-count]:after {
  position: absolute;
  right: -20%;
  top: -20%;
  content: attr(data-count);
  font-size: 90%;
  padding: .4em;
  border-radius: 999px;
  line-height: .75em;
  color: white;
  background: rgba(255, 0, 0, 1);
  text-align: center;
  min-width: 1.5em;
  font-weight: bold;
}

<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<span id="new-1" class="fa-stack fa has-badge" data-count="0">
<i class="fa fa-user-circle fa-stack-1x"></i>
</span>

Does this answer your question? Change CSS value dynamically with jQuery — devlin carnate
– devlin carnate, Commented Jan 25, 2020 at 0:01

ssun · Accepted Answer · 2020-01-25 00:29:57Z

1

$('#new-1').attr('data-count', 5);

answered Jan 25, 2020 at 0:29

ssun

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Comments

Jay Pagnis · Accepted Answer · 2020-01-25 06:10:20Z

0

If you check JQuery's documentation on this link

https://api.jquery.com/data/

it clearly states

Using the data() method to update data does not affect attributes in the DOM. To set a data-* attribute value, use attr.

Hence you should use the .attr("key", value); function.

The code would be

$('#new-1').attr('data-count', 5);

answered Jan 25, 2020 at 6:10

Jay Pagnis

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