How to Create a Responsive Header Menu with Vanilla JavaScript

📝 Description: In this quick tutorial, learn how to build a responsive header menu using only HTML, CSS, and Vanilla JavaScript — no libraries, no frameworks.

✅ One nav element ✅ Auto switches from desktop to mobile view ✅ Simple open/close logic ✅ Perfect for beginners or lightweight sites

📱 When the screen gets small, the nav transforms into a mobile menu. One clean nav, two buttons (open & close), zero clutter.

🏷️ Hashtags: #ResponsiveNavbar #JavaScriptMenu #VanillaJS #ResponsiveDesign #WebDevelopment #MobileMenu #FrontendTips #HTMLCSSJS #LearnToCode #CSSMediaQuery #PureJS #NavigationMenu #CodingTutorial #WebDesign #NoFrameworks

🌍 Source code: https://keepsnip.com/source/javascript-responsive-header-menu