When iterating over some DOM elements I found it impossible to use .data or .attr on them:
$('.running').each (index, element) =>
console.log element.closest('[data-id]')
gets me
<section class="job-block" data-id="240"></section>
...
but
$('.running').each (index, element) =>
console.log element.closest('[data-id]').data('id')
throws
Uncaught TypeError: element.closest(...).data is not a function
The closest() method that you are using is native JS method and which returns DOM element object since element refers DOM element object.
dataset property :
$('.running').each (index, element) =>
console.log element.closest('[data-id]').dataset.id
data() method.
$('.running').each (index, element) =>
console.log $(element.closest('[data-id]')).data('id')
element by jQuery and use jQuery closest() method.
$('.running').each (index, element) =>
console.log $(element).closest('[data-id]').data('id')
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