Q236 - If data is stored in SessionStorage, will it stay or be destroyed when we duplicate a tab?

SessionStorage does NOT persist when you duplicate a tab.
Each tab gets its own separate SessionStorage, but when you duplicate a tab, the new tab receives a copy of existing SessionStorage at that moment.

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✅ Detailed Explanation

✔ SessionStorage is tab-specific

• It belongs to one browser tab only
• Closing the tab deletes SessionStorage
• Opening a new tab does NOT share the same SessionStorage

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🔍 What happens when you duplicate a tab?

✔ Browser duplicates the memory state

When you right-click → Duplicate Tab, the new tab gets:

• A copy of SessionStorage (same values)
• But it becomes a separate storage for that tab

❗ After duplication:

• Changing SessionStorage in Tab A
  ➜ does NOT change SessionStorage in Tab B
• Each tab becomes totally independent

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🧪 Real Example

Suppose Tab A has:

sessionStorage.setItem("user", "Teekam");

You duplicate the tab → Tab B also has:

sessionStorage.getItem("user"); // "Teekam"

Now change in Tab B:

sessionStorage.setItem("user", "Aman");

Tab A still has:

sessionStorage.getItem("user"); // "Teekam"

✔ They Do NOT sync
✔ They are separate storages

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🧠 Why does duplication copy SessionStorage?

Because the browser clones:

• DOM state
• JavaScript memory
• SessionStorage snapshot

But after cloning, they behave independently.

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🎯 Final Answer (Interview-friendly):

SessionStorage is tab-specific.
When you duplicate a tab, the browser copies the existing SessionStorage into the new tab, but after that, both tabs have separate, independent SessionStorage.
Changes in one tab do not affect the other.