JAVASCRIPT

javascript hide element by class

document.getElementsByClassName('class_name')[0].style.visibility='hidden';

javascript hide element by class

document.querySelector('.class-name').style.display = 'none'
// or
document.querySelector('.class-name').style.visibility = 'hidden'

javascript hide element by class

docuement.querySelector('.class_name').style.visibility = 'hidden';

how to hide javascript element by class

document.getElementsByClassName('className')[0].style.visibility='hidden';

javascript hide elements by class

for (let el of document.querySelectorAll('.appBanner')) el.style.visibility = 'hidden';