js e.target.classlIST code example

Example 1: add multiple classList

element.classList.add(class1,class2,class3...);

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");