Promise handling lab
Medium
2
70.0% Acceptance
In this lab, you will be working on understanding and implementing Promises in JavaScript. Promises are used to handle asynchronous operations and provide a more straightforward way to deal with them.
You will be implementing several scenarios where promises can be used effectively.
Concepts
- Creating a Promise
- Promise states (pending, fulfilled, rejected)
then()
,catch()
andfinally()
methods- Chaining Promises
- Error handling
- Using
Promise.all()
andPromise.race()
Tasks
- Create a simple Promise that resolves after a certain time
- Make use of
then()
andcatch()
methods to handle the Promise - Create a chain of Promises
- Implement error handling in Promises
- Use
Promise.all()
to resolve multiple Promises - Use
Promise.race()
to get the result of the fastest Promise
After completing the lab, you will have a deeper understanding of how Promises work in JavaScript and how to use them for handling asynchronous operations.