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# Question 26

### Question

Can you explain the difference between `async IIFE` and an immediately invoked async function expression (IIAFE)?

### Answer

There's no distinct difference between "async IIFE" and "immediately invoked async function expression" (IIAFEX). They both refer to the same thing.

Here's a breakdown:

* **IIFE:** Stands for "Immediately Invoked Function Expression." It's a function that is defined and executed immediately upon being encountered in the code.
* **Async:** Indicates that the function uses the `async` keyword, allowing it to work with Promises and `await`.

Therefore, an **"immediately invoked async function expression" (IIAFEX)** is simply an IIFE that also happens to be declared as `async`.

**Example:**

```javascript
(async function() {
  const result = await someAsyncOperation();
  console.log(result); 
})(); // Immediately executed
```

**Why use IIAFEX?**

* **Scoping and Encapsulation:** Keeps variables local to the function, preventing potential conflicts with other code in your script.
* **Organization:** Can help structure your code into reusable blocks, making it more modular.
* **Event Handling:** Often used for asynchronous operations triggered by events (e.g., clicks, page loads).