Polyfills
Polyfills are code snippets or libraries that emulate modern JavaScript features in older browsers that lack native support. They enable developers to use the latest web standards and APIs while maintaining compatibility with legacy environments. By detecting missing functionality and providing fallback implementations, polyfills help bridge the gap between cutting-edge development and real-world browser constraints.
Developers should use polyfills when building web applications that must support older browsers (e.g., Internet Explorer) or when adopting new JavaScript features before they are universally available. This is crucial for ensuring cross-browser compatibility in enterprise environments, public-facing websites, or projects with diverse user bases. Polyfills allow teams to write modern, maintainable code without sacrificing accessibility or user experience.