What is the output of the following JavaScript code?

```js
function outer() {
let count = 0;
return function inner() {
count++;
console.log(count);
};
}
const fn = outer();
fn();
fn();
fn();
```

Question

What is the output of the following JavaScript code?

```js
function outer() {
  let count = 0;
  return function inner() {
    count++;
    console.log(count);
  };
}
const fn = outer();
fn();
fn();
fn();
```

Assisting AI · Accepted Answer

The function `outer` returns a closure that captures the variable `count`. When `outer` is invoked, `count` is initialized to 0 and the inner function is returned. Each call to `fn()` executes the inner function, which increments `count` and logs its value.

The sequence of console outputs is:
1
2
3

After the first call, `count` becomes 1 and is logged. The second call increments it to 2, and the third call increments it to 3. The closure preserves the state of `count` across calls, demonstrating how closures can maintain private state in JavaScript.

What is the output of the following JavaScript code? ```js function outer() { let count = 0; return function inner() { count++; console.log(count); }; } const fn = outer(); fn(); fn(); fn(); ```

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