🔔 Toast Notifications

🔍 Live Demo

Click any button to fire a toast notification.

💻 Complete Code

<!-- HTML: Toast container (add anywhere in body) -->
<div class="toast-container" id="toastContainer"></div>

<!-- CSS -->
.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 380px;
    pointer-events: none;
}
.toast-container > * { pointer-events: auto; }

.toast {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    background: #1e293b;
    border: 1px solid #334155;
    border-left: 4px solid #3b82f6;
    border-radius: 0.75rem;
    padding: 1rem;
    color: #cbd5e1;
    box-shadow: 0 10px 25px -10px rgba(0,0,0,0.5);
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.35s ease, opacity 0.35s ease;
    min-width: 300px;
    position: relative;
    overflow: hidden;
}
.toast.show { transform: translateX(0); opacity: 1; }

.toast.success { border-left-color: #22c55e; }
.toast.error   { border-left-color: #ef4444; }
.toast.warning { border-left-color: #f59e0b; }
.toast.info    { border-left-color: #3b82f6; }

.toast-icon { font-size: 1.25rem; flex-shrink: 0; margin-top: 1px; }
.toast.success .toast-icon { color: #22c55e; }
.toast.error   .toast-icon { color: #ef4444; }
.toast.warning .toast-icon { color: #f59e0b; }
.toast.info    .toast-icon { color: #3b82f6; }

.toast-body { flex: 1; min-width: 0; }
.toast-title { font-weight: 600; color: white; font-size: 0.9rem; margin-bottom: 0.15rem; }
.toast-message { font-size: 0.8rem; color: #94a3b8; }

.toast-close {
    background: none; border: none; color: #64748b;
    cursor: pointer; font-size: 1rem; padding: 0; line-height: 1;
    flex-shrink: 0;
}
.toast-close:hover { color: white; }

.toast-progress {
    position: absolute; left: 0; bottom: 0;
    height: 2px; background: currentColor;
    animation: toast-progress 4s linear forwards;
}
.toast.success .toast-progress { background: #22c55e; }
.toast.error   .toast-progress { background: #ef4444; }
.toast.warning .toast-progress { background: #f59e0b; }
.toast.info    .toast-progress { background: #3b82f6; }

@keyframes toast-progress {
    from { width: 100%; }
    to   { width: 0%; }
}

<!-- JavaScript -->
const ICONS = {
    success: '<i class="fas fa-check-circle"></i>',
    error:   '<i class="fas fa-times-circle"></i>',
    warning: '<i class="fas fa-exclamation-triangle"></i>',
    info:    '<i class="fas fa-info-circle"></i>'
};

function showToast(type, title, message, duration = 4000) {
    const container = document.getElementById('toastContainer');

    // Create toast element
    const toast = document.createElement('div');
    toast.className = `toast ${type}`;
    toast.innerHTML = `
        <div class="toast-icon">${ICONS[type]}</div>
        <div class="toast-body">
            <div class="toast-title">${title}</div>
            <div class="toast-message">${message}</div>
        </div>
        <button class="toast-close" aria-label="Close">×</button>
        <div class="toast-progress" style="animation-duration: ${duration}ms;"></div>
    `;

    container.appendChild(toast);

    // Trigger slide-in on next frame
    requestAnimationFrame(() => {
        requestAnimationFrame(() => toast.classList.add('show'));
    });

    // Close handler
    const closeBtn = toast.querySelector('.toast-close');
    closeBtn.addEventListener('click', () => removeToast(toast));

    // Auto-dismiss
    const timer = setTimeout(() => removeToast(toast), duration);

    // Pause on hover (nice UX)
    toast.addEventListener('mouseenter', () => {
        clearTimeout(timer);
        toast.querySelector('.toast-progress').style.animationPlayState = 'paused';
    });
    toast.addEventListener('mouseleave', () => {
        // Just let it finish quickly on leave
        const newTimer = setTimeout(() => removeToast(toast), 800);
    });
}

function removeToast(toast) {
    toast.classList.remove('show');
    toast.addEventListener('transitionend', () => toast.remove(), { once: true });
}

// Example: fire all four in sequence
function stackToasts() {
    showToast('success', 'Saved', 'Your changes have been saved.');
    setTimeout(() => showToast('info', 'Syncing', 'Sync in progress...'), 200);
    setTimeout(() => showToast('warning', 'Heads up', 'You have 3 unread messages.'), 400);
}

🧠 How It Works

• Fixed container: A single #toastContainer sits at the top-right of the viewport. All toasts go inside it.
• Slide-in: Toasts start at translateX(120%) and animate to 0 when the .show class is added.
• Progress bar: A CSS animation on the bottom border shows remaining time.
• Auto-dismiss: A setTimeout removes the toast after 4 seconds (configurable).
• Stacking: Flexbox column layout naturally stacks multiple toasts.
• Pause on hover: Timer stops when the user hovers — so they can read the message.
• Four variants: Each uses a different border-left color and icon.
• Accessible: Close button has aria-label, uses semantic icons.

💡 Why This Snippet?

• Universally needed — every web app shows notifications (success, error, info).
• Zero dependencies — pure HTML/CSS/JS, no libraries.
• Copy-paste ready — drop the container div + CSS + JS into any project.
• Customizable — change colors, duration, or position with CSS variables.
• Better UX — pause-on-hover and progress bar are details most snippets miss.
• Small footprint — under 2 KB of JS.