⚡ Tip: const Doesn’t Mean “Constant” in JavaScript

Many beginners assume:

"const means the value can never change."

But that’s not exactly true.

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✅ What const Really Means

• const prevents reassignment of the variable identifier.

• It doesn’t make the value itself immutable.

Example:

jsCopyEditconst user = { name: "Nora" };
user.name = "Lina"; // ✅ This works!

But:

jsCopyEdituser = { name: "Ali" }; // ❌ Error: Assignment to constant variable

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🔐 If You Want to Freeze the Value

Use Object.freeze():

jsCopyEditconst settings = Object.freeze({ darkMode: true });
settings.darkMode = false; // ❌ No effect

Note: Object.freeze() is shallow — it won’t freeze nested objects.

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🧠 Quick Recap

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💡 Pro Tip: Use const by default. Only use let when reassignment is needed.