Run ❯
<!DOCTYPE html> <html> <title>W3.CSS</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="4/w3.css"> <body> <div class="w3-container"> <h2>Dynamic Progress Bar</h2> <div class="w3-light-grey"> <div id="myBar" class="w3-green" style="height:24px;width:0"></div> </div> <br> <button class="w3-button w3-green" onclick="move()">Click Me</button> </div> <script> function move() { var elem = document.getElementById("myBar"); var width = 1; var id = setInterval(frame, 10); function frame() { if (width >= 100) { clearInterval(id); } else { width++; elem.style.width = width + '%'; } } } </script> </body> </html>