is has class javascript code example

Example 1: javascript hass class

if (myElement.classList.contains('someClassname')) {
    // do something
}

Example 2: query selector has clas

document.body.classList.add('thisClass');
// $('body').addClass('thisClass');

document.body.classList.remove('thatClass');
// $('body').removeClass('thatClass');

document.body.classList.toggle('anotherClass');
// $('body').toggleClass('anotherClass');