External Scripts
External scripts refer to JavaScript or other scripting code that is loaded from an external source, typically via a URL in an HTML document, rather than being embedded directly in the HTML. This allows for code reuse, easier maintenance, and separation of concerns between content and behavior. It is commonly used in web development to include libraries, frameworks, or custom scripts from CDNs or local files.
Developers should use external scripts to improve performance through caching, enable modular development by sharing code across multiple pages, and simplify updates by centralizing script management. Specific use cases include loading jQuery from a CDN for DOM manipulation, integrating analytics tools like Google Analytics, or including custom utility scripts in a web application.