javascript add class to element with id

sure, i'd be happy to provide a tutorial on adding a class to an html element with a specific id using javascript.

in javascript, you can use the `classlist` property of an html element to add a class. the `classlist` property allows you to easily add, remove, or toggle classes on an element.

here's a step-by-step guide to adding a class to an element with a specific id:

1. first, you need to select the element you want to add a class to. you can do this using the `getelementbyid` method provided by the `document` object in javascript.

2. once you have selected the element, you can use the `classlist` property to add a class to it.

3. to add a class, you can use the `add` method of the `classlist` property and pass the name of the class you want to add as an argument.

here's an example code snippet that demonstrates how to add a class to an element with the id "return":

in this code example:
- we have an html element `div` with the id "return".

when you run this code, the background color of the element with the id "return" will change to yellow due to the added class "highlight".

i hope this tutorial helps you understand how to add a class to an element with a specific id using javascript. let me know if you need further clarification or have any other questions!

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