Create a Form in Just 4 Minutes using HTML, CSS, and JavaScript | Html | Css | JavaScript 

Refer full code in Github - github.com/yourtechassist/Form or Java Script document.getElementById('contactForm').addEventListener('submit', function(event) { event.preventDefault(); const name = document.getElementById('name').value, email = document.getElementById('email').value, message = document.getElementById('message').value, display = document.getElementById('messageDisplay'); display.textContent = (name && email && message) ? 'Thank you for your message!' : 'Please fill out all fields!'; display.style.color = (name && email && message) ? 'green' : 'red'; });