JavaScript Hoisting

What is Hoisting?

Hoisting moves declarations to the top of scope.

```javascript console.log(x); // undefined (not error!) var x = 5; ```

**JavaScript sees it as:** ```javascript var x; console.log(x); x = 5; ```

let/const Hoisting

```javascript console.log(x); // Error! (Temporal Dead Zone) let x = 5; ```

**let/const are hoisted but not initialized.**

Key Takeaway

var hoists and initializes. let/const hoist but not initialize. Always declare before use.