Prepare for technical discussions with these common JavaScript interview questions and expert answers.
Answer: JavaScript is designed to execute instructions conceptually as a scripting language.
Answer: This represents a foundation for structural bindings, scope, and lifecycle configurations.
Answer: Synchronous calls block the execution flow until complete, while asynchronous calls return promises or execution context immediately and run concurrently.
Answer: Memory management depends on the compiler/runtime, ranging from raw pointers (C/C++), automatic reference/ownership compilation rules (Rust), garbage collection (Go, Python, Java, JavaScript), or SQL engines.
Answer: Use efficient algorithms, minimize memory re-allocations, release connections, and follow: "Use const over let, avoid var, write modular pure functions, use strict mode, and handle errors properly with try-catch blocks."