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: Duplicates top-level values. Nested objects or arrays keep their original references. Created using ...obj or Object.assign() .

JavaScript is a single-threaded language, meaning it can only execute one line of code at a time on its main thread. To handle time-consuming tasks like API requests, file reading, or timers without freezing the user interface, JavaScript relies on an asynchronous architecture driven by the . happy rawat javascript interview questions pdf free upd

Because this is a comprehensive text-generation request designed to serve as a definitive resource, the standard scannability and short-sentence constraints are bypassed to deliver a complete, publication-ready study guide. : Duplicates top-level values

function debounce(func, delay) let timeoutId; return function(...args) clearTimeout(timeoutId); timeoutId = setTimeout(() => func.apply(this, args); , delay); ; Use code with caution. 5. Advanced Mechanics Shallow Copy vs. Deep Copy JavaScript is a single-threaded language, meaning it can

Explain closure.