add multi class javascript code example
Example 1: add multiple class list at once in js
elem.classList.add("first");
elem.classList.add("second");
elem.classList.add("third");
is equal to :
elem.classList.add("first","second","third");
Example 2: add multiple class from array javascript
const classArray = ["cl1", "cl2", "cl3"];
div.classList.add(...classArray);