Dynamic Imports
Dynamic imports are a JavaScript feature that allows modules to be loaded asynchronously at runtime, rather than statically at the start of execution. This enables code-splitting, lazy loading, and on-demand resource fetching, improving performance by reducing initial bundle sizes. It is implemented using the `import()` function, which returns a promise that resolves to the module's namespace object.
Developers should use dynamic imports to optimize web applications by splitting code into smaller chunks that load only when needed, such as for route-based or feature-based lazy loading. This is crucial for large-scale applications to reduce initial load times, improve user experience, and manage bandwidth efficiently, especially in environments with limited resources like mobile devices.