Modal

In plain words: A modal popup is a box that appears over your main screen, forcing the user to interact with it before they can return to the main page. In Salesforce Lightning Web Components (LWC), you can build a clean, custom modal using a simple combination of HTML for the structure, CSS for the dark background overlay, and a JavaScript boolean variable to control when it opens and closes. Modals are essential UI elements. Whether you need to ask a user to confirm a deletion, display a complex data entry form, or show a critical warning, a modal popup with a darkened background overlay focuses the user's attention exactly where you need it. In this guide, we will build a highly reusable, custom modal component from scratch and show you how to control it from a parent component.