add class cont js 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: js add class
// getting the target element
var myElement = document.querySelector('#myElement');
// example for addding some-class to the element
myElement.classList.add('some-class');
// multiple classes can be added like this
myElement.classList.add('one-class', 'one-more-class');
// example for removing any class from the element
myElement.classList.remove('any-class');