What are the differences between JavaScript engines?

What are the main differences between JavaScript engines like V8 and SpiderMonkey?

The main differences include performance, memory usage, and features. V8, used in Chrome, is known for its speed, while SpiderMonkey, used in Firefox, focuses on standards compliance.

How do these engines handle memory management?

V8 uses a generational garbage collector, which helps in optimizing memory allocation and deallocation. SpiderMonkey also has a garbage collector but employs different strategies for memory management.

Are there any specific use cases where one engine is preferred over the other?

Yes, V8 is often preferred for server-side applications using Node.js due to its performance, while SpiderMonkey is favored in environments where compliance with JavaScript standards is critical.

What about other engines like JavaScriptCore or Chakra?

JavaScriptCore, used in Safari, is optimized for performance on Apple devices, while Chakra, used in older versions of Edge, focuses on compatibility and performance in Windows environments.