javascript add class to element by class

adding a class to an element in javascript can be achieved by manipulating the `classlist` property of the element. the `classlist` property is a read-only property that returns a live `domtokenlist` collection of the class attributes of the element.

here's a step-by-step tutorial on how to add a class to an element by class name in javascript:

1. **select the element:**

2. **add the class:**

3. **example code:**
here's an example code snippet demonstrating how to add a class to an element by class name:

in this code snippet:

4. **check if the class was added:**
you can verify if the class was added successfully by checking the `classlist` of the element.

by following these steps, you can easily add a class to an element by class name in javascript. this method is commonly used for dynamically changing the appearance or behavior of elements on a webpage.

...

#javascript add days to date
#javascript add to array
#javascript add event listener to button
#javascript add attribute to element
#javascript add class to element

javascript add days to date
javascript add to array
javascript add event listener to button
javascript add attribute to element
javascript add class to element
javascript addeventlistener
javascript add style to element
javascript add to object
javascript add class
javascript add property to object
javascript element
javascript element parent
javascript element selector
javascript element attributes
javascript element has class
javascript element type
javascript element style
javascript element height