jquery data-attribute value code example
Example 1: jquery get data-id
const dataId = $('#elementId').attr("data-id");
Example 2: jquery get data attribute
<a data-id="123">link</a>
var id = $(this).data("id"); // Will set id to 123
const dataId = $('#elementId').attr("data-id");
<a data-id="123">link</a>
var id = $(this).data("id"); // Will set id to 123