check has class in javascript code example

Example 1: javascript check if element has class

if(document.getElementById("myElmentID").classList.contains("hidden")){
// I have the 'hidden' class
}

Example 2: javascript hasclass

if (document.body.classList.contains('thatClass')) {
    // do some stuff
}

Example 3: how to check has class name in js?

element.classList.contains(className);Code language: CSS (css)