ResponsiveLiteDropdownMenuSample/Index.html at master · luonganh/ResponsiveLiteDropdownMenuSample · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8" />
    <title>Responsive Lite Dropdown Menu</title>
    <link rel="stylesheet" href="css/style.css" />
    <link rel="stylesheet" href="css/header.css" />
    <link rel="stylesheet" href="css/responsive_mobile.css" />
</head>
<body>
    <div class="body-container">
        <header>
            <nav class="navbar container-fluid">
                <a href="/" class="logo"><img class="logo-img" src="images/logo-desktop.png" /></a>
                <ul class="nav-list">
                    <li class="nav-item"><a href="/">Home Page</a></li>
                    <li class="nav-item"><a href="javascript:;">Category 1</a></li>
                    <li class="nav-item dropdown">
                        <a href="javascript:;"><span>Category 2<img src="images/white-drop-down-arrow.png" /></span></a>
                        <ul class="dropdown-menu">
                            <li><a href="javascript:;">Category 2a</a></li>
                            <li><a href="javascript:;">Category 2b</a></li>
                        </ul>
                    </li>
                    <li class="nav-item"><a href="javascript:;">Category 3</a></li>
                    <li class="nav-item"><a href="javascript:;">Category 4</a></li>
                    <li class="nav-item"><a href="javascript:;">Category 5</a></li>
                    <li class="nav-item"><a href="javascript:;">Category 6</a></li>
                    <li class="nav-item"><a href="javascript:;">Category 7</a></li>
                </ul>
                <div class="menu-icon">
                    <div class="menu-icon-container" onclick="clickMobileMenu(this)">
                        <div class="bar1"></div>
                        <div class="bar2"></div>
                        <div class="bar3"></div>
                    </div>
                </div>
            </nav>
        </header>
    </div>
    <script>
        function clickMobileMenu(x) {
            var menuList = document.querySelector(".nav-list");
            if (x.classList.contains('change')) {
                menuList.style.display = "none";
            }
            else {
                menuList.style.display = "flex";
            }
            x.classList.toggle("change");
        }

        // Attach the event listener to the window's resize event
        window.addEventListener('resize', handleResize);

        // Call handleResize initially to check the screen width on page load
        handleResize();

        function handleResize() {
            // Get the current screen width
            var screenWidth = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;

            // Specify the target width
            var smallDevicesWidth = 480; // Change this to your specified number
            var menuList = document.querySelector(".nav-list");
            var menuIcon = document.querySelector(".menu-icon-container");
            // Check if the screen width matches the specified number
            if (screenWidth > smallDevicesWidth) {
                menuList.style.display = "flex";
            }
            else if (!menuIcon.classList.contains('change')) {
                menuList.style.display = "none";
            }
        }
    </script>
</body>
</html>