Check if an element has an attribute

Check for the existence of an attribute (including data attributes) on an element. This method can also be used to manipulate other types of attributes—things like id, tabindex, name, and so on.

var elem = document.querySelector('#lunch');

if (elem.hasAttribute('data-drink')) {
	console.log('Add a drink!');
}

Source

https://vanillajstoolkit.com/reference/attributes/hasattribute/