requestAnimationFrame
requestAnimationFrame is a JavaScript API method that tells the browser to call a specified function before the next repaint, enabling smooth and efficient animations by synchronizing with the browser's refresh rate. It optimizes performance by pausing when the tab is inactive and reducing CPU usage compared to older methods like setInterval. This API is essential for creating fluid visual effects, games, and interactive UI elements in web applications.
Developers should use requestAnimationFrame when building animations, games, or any visual updates that require smooth, high-performance rendering, as it prevents jank and reduces power consumption by aligning with the browser's frame rate. It's particularly useful for canvas-based graphics, scrolling effects, and real-time data visualizations where frame timing is critical. Learning this is key for modern front-end development to avoid performance pitfalls and create responsive user experiences.