# promises-exercises

**Repository Path**: chenming142/promises-exercises

## Basic Information

- **Project Name**: promises-exercises
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2024-05-29
- **Last Updated**: 2024-05-29

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# promises-exercises

Set of exercises in using JS promises for handling asynchronous operations.

## Setup

1. Fork this repository.
2. Run `npm install` to download the Node modules.

## Using

For these exercises, there are a few folders, each corresponding to a step in the lesson. Each of them has a `README.md`, a `test.js`, and an `answers.js`.  Read the   README.md for further instructions, implement the methods in the `answers.js`, passing the tests in the `tests.js` file.  The answers has a 

> Quick tip:  To run any of the exercises below in watch mode, add `-- --watch`, (e.g. `npm run 01-making-promises -- --watch`)

You are free to look at any of the tests for guidance, but don't change them.

## Outline

### The Promise Toolbox

These exercises are all about learning the mechanisms that we can use to create, transform, and combine promises.

* `npm run 01-making-promises` - Create promises with Promise.resolve, Promise.reject, and the Promise constructor.
* `npm run 02-consuming-promises` - Use `.then(cb)` and `.catch(cb)` to respond to a promise completing and do something with the result.
* `npm run 03-transforming-promises` - Use `.then(cb)` and `.catch(cb)` to transform the results of async processes.
* `npm run 04-chaining-promises` - Use `.then(cb)` and `.catch(cb)` to chain async processes.

### Promise Puzzles

Now it's time to use the tricks from above to solve some problems.

* `npm run 05-callbacks` - Turn callback-centric functions into promise-centric functions.