Today, I put together a clear guide on JavaScript variables. In this guide, you'll learn: ⭕ What are JavaScript variables? ⭕ Understanding variable declarations using the three keywords: `𝘃𝗮𝗿`, ...

When you write: ```js let a = "hello world"; let b = a; ``` No character data is actually copied. Both variables point to the same memory. The engine can do this safely because strings in JavaScript ...

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