classlist replace 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: classlist

// use the classList API to remove and add classes
div.classList.remove("foo");
div.classList.add("anotherclass");

Example 3: css class list

var myElement = document.getElementById("myElementID");
myElement.classList.add("style1 style2");
myElement.classList.remove("style1 style2");