1-1 Promise video introduction

1-2 Introduction to Promises

2-1 First experience with Promise 01

2-2 First experience with Promise 02

3-1 fs read file

3-2 ajax request

3-3 Encapsulate fs reading file operation

3-4 The promisify method performs promise style conversion

3-5 Promise encapsulates AJAX requests

4-1 Introduction to object status attributes

4-2 Introduction to object result value attributes

5-1 Promise workflow

5-2 Promise API-constructor-then-catch

5-3 Promise.resolve method

5-4 Promise.reject method

5-5 Promise.all methods

5-6 Promise.race method

6-1 How to modify the state of an object

6-2 Can multiple callbacks be executed?

6-3 Issues with the order of changing status and specifying callbacks

6-4 What determines the result returned by the then method?

6-5 Chain multiple tasks

6-6 abnormal penetration

6-7 How to terminate a promise chain

7-1 Initial structure building

7-2 Resolve and regect structure construction

7-3 resolve and regect code implementation

7-4 Thtow throws exception to change state

7-5 The state of a Promise object can only be modified once

7-6 then method executes callback

7-7 Execution of asynchronous task callbacks

7-8 Specify multiple callback implementations

7-9 Synchronously modify the status then method result return

7-10 Asynchronously modify the status then method result return

7-11 then method improvement and optimization

7-12 catch method - exception penetration and value passing

7-13 resolve method encapsulation

7-14 reject method encapsulation

7-15 all method encapsulation

7-16 race method encapsulation

7-17 Asynchronous execution of then method callback

7-18 Implementation of class version

8-1 async function

8-2 await expression

8-3 Combining async and await in practice

8-4 async and await combined to send ajax request