Build a Modal & Confirmation Dialog with HTML, CSS & JavaScript

Learn how to build a modal popup and a confirmation dialog using HTML, CSS, and JavaScript! This is my first video introducing JavaScript into the component series — using it just enough to control show/hide interactions, while keeping the styling and animation in CSS. This is Part 10 of my ongoing UI Components series. 📂 Source Code: https://drive.google.com/drive/folder... In this video, you'll learn how to build: 🔹 Modal / Popup Dialog — "Upgrade to Pro" popup with dark overlay, fade-in animation, and slide-up modal effect 🔹 Confirmation Dialog — delete account confirmation with warning icon, destructive action styling, and cancel/confirm buttons ✅ Fade-in overlay and slide-up modal animations (CSS keyframes) ✅ Show/hide interactions using JavaScript DOM class manipulation ✅ Centered dialog layout with Flexbox ✅ Reusable overlay pattern for multiple components ✅ Consistent design system carried over from earlier parts 📌 Note: Dialogs open/close via JavaScript, but the "Yes, Delete" button is a visual demonstration only — it doesn't perform an actual account deletion. 🔧 Built with: HTML5, CSS3, JavaScript 🎨 Design system: Indigo primary, consistent spacing & radius from earlier parts This is Part 10 of my UI Components series — up next: more overlay and feedback components. 👍 If this helped you, drop a like and subscribe — new coding tutorials every week! 💬 Stuck on a step? Drop your question in the comments, I read every one. #HTMLCSS #JavaScript #Modal #FrontendDevelopment #CodingTutorial