Bummer! This is just a preview. You need to be signed in with an account to view the entire instruction.




If you would like to follow along using JavaScript, you can fork this workspace.

<h2 id="dry" style="padding-top: 100px; margin-top: -100px;">DRY</h2>

Repeating yourself is a common mistake new programmers make. It can be easy when creating a project to not notice you’ve created the same variable twice or repeated some...