How do I use polyfills in my project?

How do I use polyfills in my project?

Polyfills are scripts that enable modern features in older browsers. What specific features are you looking to polyfill?

I need to support Promise and Fetch API in older browsers.

You can use polyfill libraries like 'core-js' for Promises and 'whatwg-fetch' for the Fetch API. Would you like help with installation?

Yes, how do I install them?

You can install them using npm. Run npm install core-js whatwg-fetch in your project directory.

Do I need to include them in my HTML file?

Yes, after installation, include them in your HTML file using <script> tags or import them in your JavaScript files.