let name = "Nayem miah"; name = "Sakib"; The original string "Nayem miah" remains in memory even after name no longer points to it. Here's how and why:

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What Happens in Memory? Initial Assignment: When you write let name = "Nayem miah";, JavaScript stores the string "Nayem miah" in memory and the variable name points to its location.Reassignment: When you reassign name = "Sakib";, a new string "Sakib" is created and stored in memory.The variable name now points to this new string's location in memory.The original string "Nayem miah" is no longer referenced by name.Garbage Collection: Since "Nayem miah" is not referenced by any variable, it becomes eligible for garbage collection.JavaScript’s garbage collector will eventually remove it from memory, freeing up resources. This process is automatic and happens periodically.

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Key Points About Memory Management in JavaScript Immutable Primitives: Strings, numbers, and other primitives are immutable, meaning their content cannot be changed. New values are created when modifications are made.Garbage Collection: JavaScript employs automatic garbage collection to manage memory.Unreachable objects or values (like "Nayem miah" in this case) are marked for removal and cleaned up during garbage collection.Temporary Existence of Unused Values: Until garbage collection occurs, "Nayem miah" might still exist in memory, even though it is no longer accessible via any variable.

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Illustration of Garbage Collection Here’s an analogy: Imagine you write "Nayem miah" on a piece of paper (memory) and assign it to a variable name.When you reassign name = "Sakib", the paper now shows "Sakib".The original "Nayem miah" is still in the room (memory), but no one is looking at it anymore.Eventually, the janitor (garbage collector) sees that the paper with "Nayem miah" is not being used and disposes of it.

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Does This Cause a Memory Leak? No, in most cases, this won't cause a memory leak because JavaScript's garbage collector is designed to handle such scenarios efficiently. However: Memory leaks can occur if references to unused values are kept alive unintentionally (e.g., in global variables, closures, or event listeners).

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Summary Yes, "Nayem miah" will temporarily remain in memory after reassignment.It will be cleaned up during the garbage collection process when it's no longer referenced by any variable.