Building a simple image gallery using JavaScript allows you to practice creating and removing elements dynamically. You will use what you have learned about selecting elements, creating new nodes, appending them to the DOM, and removing them in response to user actions. Start by understanding the overall process: you need a container for your gallery, a way to add new images (such as a button), and a mechanism to remove an image when it is clicked. This flow demonstrates how creation and removal techniques can work together in a practical scenario.

Begin by selecting the gallery container and the button using getElementById. When the "Add Image" button is clicked, a new img element is created, its src and class are set, and it is appended to the gallery. Each image receives a click event listener that removes it from the DOM when clicked. This approach combines dynamic creation with interactive removal, giving you a hands-on example of how to manage DOM elements in response to user actions.