js add class
var element = document.getElementById('element');
element.classList.add('class-1');
element.classList.add('class-2', 'class-3');
element.classList.remove('class-3');js add class
var element = document.getElementById('element');
element.classList.add('class-1');
element.classList.add('class-2', 'class-3');
element.classList.remove('class-3');add class to html tag javascript
var root = document.getElementsByTagName( 'html' )[0]; // '0' to assign the first (and only `HTML` tag)
root.className += ' responsive';Copyright © 2021 Codeinu
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