[7][8] Many libraries include code to detect differences between runtime environments and remove the need for applications to allow for such inconsistencies.
[citation needed] Almost all JavaScript libraries are released under either a permissive or copyleft license to ensure license-free distribution, usage, and modification.
These frameworks often extend or enhance features available through native web technologies, such as routing, component-based development, and state management.
While native web standards, including Web Components, modern JavaScript APIs like Fetch and ES Modules, and browser capabilities like Shadow DOM, have advanced significantly, frameworks remain widely used for their ability to enhance developer productivity, offer structured patterns for large-scale applications, simplify handling edge cases, and provide tools for performance optimization.
[12][13][14] Frameworks can introduce abstraction layers that may contribute to performance overhead, larger bundle sizes, and increased complexity.