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');javascript add class to element
var someElement= document.getElementById("myElement");
someElement.className += " newclass";//add "newclass" to element (space in front is important)how to add a class to an element in javascript
// This is to add a class to any html element after you store it
// in the element variable
element.classList.add("my-class-name");
// This is to remove a class from the element
element.classlist.remove("my-class-name");Copyright © 2021 Codeinu
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