JavaScript: Async

Explore asynchronous programming in JavaScript. Learn how to build faster, more efficient code with callbacks, promises, and the async/await operators.

Introduction

• Implementing smart asynchronous code
• What you should know
• Environment setup
• Getting an OpenWeatherMap API key

1. Programming Asynchronously with Callbacks

• Understanding what asynchronous means
• Defining asynchronous programming
• Using callbacks in asynchronous programming
• Implementing callbacks for problem-solving
• Using error checking with multiple callbacks

2. Programming Asynchronously with Promises

• Understanding promises
• Building asynchronous code with promises
• Appending methods to resolved promises
• Using catch methods for rejected promises
• Using the finally method for executing handlers
• Preparing the all method for executing multiple promises
• Implementing the all method for executing multiple promises
• Making code backward-compatible with polyfill

3. Programming Asynchronously with Async/Await

• Understanding the async/await model
• Using async functions with await statements
• Using statements to handle errors in async/await code
• Making async/await code backward compatible with polyfill

4. Programming Asynchronously with Web Workers

• What is a web worker?
• Creating a web worker
• Sending data to a web worker
• Returning data from a web worker
• Identifying use cases for web workers

Conclusion

• Asynchronous coding experience