What are the key features of modern JavaScript engines?
Modern JavaScript engines, like V8 and SpiderMonkey, have features like Just-In-Time (JIT) compilation, garbage collection, and support for ES6+ syntax.
Can you explain how JIT compilation works?
JIT compilation translates JavaScript code into machine code at runtime, optimizing performance by compiling frequently executed code.
What is garbage collection in JavaScript engines?
Garbage collection automatically frees up memory by removing objects that are no longer in use, preventing memory leaks.
How do modern engines handle asynchronous programming?
They use event loops and promises to manage asynchronous operations, allowing non-blocking execution of code.
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