JavaScript-Fundamentals/promiseChain.js at main · arefinMilen/JavaScript-Fundamentals · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
const taskOne = () => {
    return new Promise( (resolve,reject)=>
    {
        resolve("task one is completed ");
    });
};
const taskTwo = () => {
    return new Promise( (resolve,reject)=>
    {
        resolve("task two is completed ");
    });
};
const taskThree = () => {
    return new Promise( (resolve,reject)=>
    {
        resolve("task three is completed ");
        reject("task three is not completed");
    });
};
const taskFour = () => {
    return new Promise( (resolve,reject)=>
    {
        resolve("task four is completed ");
    });
};
const taskFive = () => {
    return new Promise( (resolve,reject)=>
    {
        resolve("task five is completed ");
    });
};

taskOne()
.then( (res) => console.log(res))
.then(taskTwo)
.then( (res)=> console.log(res) )
.then(taskThree)
.then( (res) => console.log(res))
.then(taskFour)
.then( (res) => console.log(res))
.then(taskFive)
.then( (res) => console.log(res) )
.catch((err)=> console.log(err));