get data attribute then set new javascript code example

Example 1: js get data attribute

var element = document.querySelector('.element');
var dataAttribute = element.getAttribute('data-name');
// replace "data-name" with your data attribute name

console.log(dataAttribute);

Example 2: how to set data attribute in js using setattribute

// setting data-foovar el = document.querySelector('div');el.setAttribute('data-foo', 'Hello World!');