Breaking News: Grepper is joining You.com. Read the official announcement!

js promise example

Add Answer

Quaint Quelea answered on September 8, 2021 Popularity 10/10 Helpfulness 2/10

answer js promise example

related javascript promise

related javascript promise example basic

related what is promise in javascript

related javascript promise

related promise in javascript

related javascript Create a Promise

related promise in javascript

related promise syntax for javascript

js promise example

Comment

function examplePromise(){
  let promiseToReturn = new Promise(function (resolve, reject) {
    let sum;
    setTimeout(function(){
      sum = 5 + 6;
      if(sum > 10) {
        resolve(sum);
      }else{
        reject('The promise has been rejected');
      }     
    }, 2000);
  });
  return promiseToReturn;
}

console.log('some piece of code');
examplePromise().then(function(result){
  console.log(result);
}).catch(function(error){
  console.log(error);
});
console.log('another piece of code');

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: careerfoundry.com

Tags: javascript promise

Link to this answer
Share Copy Link

Contributed on Apr 12 2022

Quaint Quelea

0 Answers Avg Quality 2/10

Closely Related Answers

javascript promise

Comment

let conditions=true;


const proms= new Promise((resolve, reject) => {
    setTimeout(() => {
        if (conditions) {
            resolve ("Hello")
        } else {
            reject ("This condition faild")
        }
    }, 2000);
});


proms.then((result) => {
    console.log(result);
})
.catch(function(error){
    console.log(error);
});

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Jul 18 2022

Noor Mohammad Patwary

0 Answers Avg Quality 2/10

javascript promise example basic

Comment

-1

const anotherPromise = new Promise((resolve, reject) => {
  setTimeout(() => {
    resolve('this is the eventual value the promise will return');
  }, 300);
});

// CONTINUATION
anotherPromise
.then(value => { console.log(value) })

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: www.freecodecamp.org

Tags: basic basi

Link to this answer
Share Copy Link

Contributed on Jan 26 2022

Yawning Yacare

0 Answers Avg Quality 2/10

what is promise in javascript

Comment

Promises are used to handle asynchronous operations in JavaScript.
They are easy to manage when dealing with multiple asynchronous operations
where callbacks can create callback hell leading to unmanageable code.

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on May 20 2022

Raviraj Solanki

0 Answers Avg Quality 2/10

javascript promise

Comment

let promise = new Promise((resolve,reject)=>{
                try {
                    resolve("some data");
                } catch (error) {
                    reject(error);
                }
            })
            
            promise.then(function (data) {
                console.log(data);
            },function (error) {
                console.error(error);
            })

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stickynotepickles.herokuapp.com

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Feb 18 2022

Powerful Pigeon

0 Answers Avg Quality 2/10

promise in javascript

Comment

----------------------------------------
Promise.all() allSettled() race()
----------------------------------------
* Promise.all() :
  - all() method is used when all promises are expected to return the
    resolved state.   
  - showing result at a particular follow sequence.
// Example: 
const p1 = new Promise((resolve,reject)=>{ 
setTimeout(()={ resolve("Promise3"); },2000) );
Promise.all([p1,p2,p3]).then((prMsgs)=>{ console.log(prMsgs); }) 

* Promise.allSettel():
  - showing all the result regardless resolve or reject
  - It will show resolve or reject promises one by one.

* Promise.race(): 
  - From the list of promises if any promise returns the result first 
    then it will show that promise result. 

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Promise : 
//Simple promise example: 
const data = new Promise((resolve, reject) => {
	if (1 > 3) {
		resolve('Working fine')
	} else {
		reject('Something wrong')
	}
})
data.then((res) => {
	console.log(`Success=>`, res)
})
data.catch((err) => {
	console.log(`Error=>`, err)
})

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Jan 04 2023

Abhishek

0 Answers Avg Quality 2/10

promise in javascript

Comment

const studentRol=new Promise((resolve, reject) => {
    setTimeout(()=>{
        /**this function will give the value Of tageted studebt Roll number  */
           let RollOffStd=[1,2,3,4,5,6,7,8];
        
            for (let index = RollOffStd[RollOffStd.length-1]+1 ; index <50; index++) {
                RollOffStd.push(index)
                
            }
            
            resolve( RollOffStd)
            
            reject('My name is Noor mohammad ')
      

    },1000)
})


const mybiodata=(gRollOfStudent /* this is First parameter OF ( mybiodata function ) and You can change parameter value  */)=>{
    return new Promise((resolve, reject) => {
        setTimeout((x) => {
           let  bio={
                myname : 'Noor mohammad Patwary ' ,
                age : 25 ,
            }

            resolve(`my name is ${bio.myname } and my age =  ${bio.age } and my roll is =${x} ` )
        }, 1000,gRollOfStudent);
    })
}

studentRol.then(( RollOfStudent)=>{
    console.log(RollOfStudent); /** From here we are gating the Value OF student roll number  */
    mybiodata(RollOfStudent[1] /* this is First Argument OF ( mybiodata function )*/).then((fff)=>{
        console.log(fff);
    })

}).catch((x)=>{
    console.log(x);
})

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Aug 15 2022

Noor Mohammad Patwary

0 Answers Avg Quality 2/10

javascript Create a Promise

Comment

let promise = new Promise(function(resolve, reject){
     //do something
});

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on May 21 2022

SAMER SAEID

0 Answers Avg Quality 2/10

promise in javascript

Comment

/*
A promise is a building object of JavaScript, using it we can easily do 
asynchronous tasks. Also, the concept that is used to create clean code 
basically promises.
*/
//Promise
let firstPromise = new Promise((resolved, reject) => {
    let fullName = 'Muhammad Shahnewaz';
    setTimeout(() => resolved(fullName), 3000);  //we need to use setTimeout() 
}).then((name) => {
    console.log('I am ' + name);    //Muhammad Shahnewaz
});

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Jun 20 2022

Rasel Ahmed

0 Answers Avg Quality 2/10

promise in javascript

Comment

-1

//promise is an object that give result of request or reject request
//creation of promise
const promise = new Promise((resolve, reject) => {
  setTimeout(() => {
    console.log('got the user');
    //     resolve({ user: 'shirshak' });
    reject(new Error('User not logged in'));
  }, 2000);
});

//consume of promise
promise
  .then(user => {
    console.log(user);
  })
  .catch(err => console.log(err.message));

Popularity 9/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Dec 19 2022

Shirshak Kandel

0 Answers Avg Quality 2/10

promise syntax for javascript

Comment

let myPromise = new Promise(function(myResolve, myReject) {
// "Producing Code" (May take some time)

  myResolve(); // when successful
  myReject();  // when error
});

// "Consuming Code" (Must wait for a fulfilled Promise)
myPromise.then(
  function(value) { /* code if successful */ },
  function(error) { /* code if some error */ }
);

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

Link to this answer
Share Copy Link

Contributed on Sep 08 2021

Better Bee

0 Answers Avg Quality 2/10

js promise example

Contents

More Related Answers

js promise example

Closely Related Answers

javascript promise

javascript promise example basic

what is promise in javascript

javascript promise

promise in javascript

promise in javascript

javascript Create a Promise

promise in javascript

promise in javascript

promise syntax for javascript

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.