How can JavaScript be utilized to adjust the size of a banner based on window dimensions?

To adjust the size of a banner based on window dimensions using JavaScript, you can add an event listener to the window object that listens for changes in the window size. When the window is resized, you can then update the size of the banner accordingly by accessing the banner element and adjusting its width and height properties. ```javascript window.addEventListener('resize', function() { var banner = document.getElementById('banner'); var windowWidth = window.innerWidth; var bannerWidth = windowWidth * 0.8; // Adjust as needed var bannerHeight = bannerWidth * 0.5; // Adjust as needed banner.style.width = bannerWidth + 'px'; banner.style.height = bannerHeight + 'px'; }); ```