获取具有变量值的数据值

Question

I have a data-value in my php code that is used in several places, for example:

<a class="dropdown-item" data-value="<?= $i ?>"></a>
<a class="dropdown-item" data-value="<?= $k ?>"></a>

And now I need to use one of these values ​​in the script

getAttribute('data-value')

But I can't just use data-value , since it will be relevant to everything that I have, I only need to use this data-value="<?= $k ?>"

How can I specify a value with this variable in the script?

Answer 1

since you want to get the data-value of a specific element with the $k variable, your best bet is giving an id to that specific element and selecting it by id:

HTML

<a id="element_with_k" class="dropdown-item" data-value="<?= $k ?>"></a>

JS

const elementWithK = document.getElementById('element_with_k');

elementWithK.dataset.value // "the content of $k"

In case thete are multiple elements that you want to select then you add an extra class to those elements, query all the elements that have the extra class , loop through them and get each element's value.

Hope this helps, cheers!