javascript create element class name code example

Example 1: javascript create element with class

Let suppose we are creating a div using javascript create element
// create a new div element 
	var newDiv = document.createElement("div"); 
// assigning class name to the new div
	newDiv.className = "className";

Example 2: element.classname javascript

let el = document.getElementById('item');

if (el.className === 'active'){
  el.className = 'inactive';
} else {
  el.className = 'active';
}