# Chapter 13. Asynchronous JavaScript

## 13.1 Asynchronous Programming with Callbacks

### 13.1.1 Timers

### 13.1.2 Events

### 13.1.4 Callbacks and Events in Node

## 13.2 Promises

### 13.2.1 Using Promises

### 13.2.2 Chaining Promises

### 13.2.3 Resolving Promises

### 13.2.4 More on Promises and Errors

### 13.2.5 Promises in Parallel

### 13.2.6 Making Promises

### 13.2.7 Promises in Sequence

## 13.3 async and awit

### 13.3.1 await Expression

### 13.3.2 async Functions

### 13.3.3 Awaiting Multiple Promises

### 13.3.4 Implementation Details

## 13.4 Asynchronous Iteration

### 13.4.1 The for/await Loop

### 13.4.2 Asynchronous Iterators

### 13.4.3 Asynchronous Generators

### 13.4.4 Implementing Asynchronous Iterators