Element, any valid [[mdn>Web/API/HTMLElement|HTMLElement]].
Parameters:
className – the name of the class to check for, as [[mdn>JavaScript/Reference/Global_Objects/String|String]] object or as quoted string (required).
Returns:
[[mdn>Web/JavaScript/Reference/Global_Objects/Boolean|Boolean]] – ''true'' if the class is attached, ''false'' if it is not.
Notes:
* This function is a simple wrapper for the [[mdn>Web/API/Element/classList|classList]]''.contains()'' function and only provides a slightly more convenient way of referencing this property.
===== Examples =====
Simple example:
let foo = document.getElementById('foo');
if (foo.hasClass('bar')) {
…
};
===== See also =====
* [[toolbox:classes:addclass:index|.addClass()]]
* [[toolbox:classes:removeclass:index|.removeClass()]]
* [[toolbox:classes:toggleclass:index|.toggleClass()]]
===== More information =====
* [[mdn>Web/API/HTMLElement|HTMLElement]] on MDN.
* [[mdn>Web/API/Element/classList|classList]] on MDN.