Creating a promise

Javascript promises

var posts = [
  {name:"Mark42",message:"Nice to meet you"},
  {name:"Veronica",message:"I'm everywhere"}
];

function Create_Post(){
  setTimeout(() => {
    posts.forEach((item) => {
      console.log(`${item.name} --- ${item.message}`);
    });
  },1000);
}

function New_Post(add_new_data){
  return new Promise((resolve, reject) => {
    setTimeout(() => {
     posts.push(add_new_data);
      var error = false;
      if(error){
        reject("Something wrong in </>, Try setting me TRUE and check in console");
      }
      else{
        resolve();
      }
    },2000);
  })
}

New_Post({name:"War Machine",message:"I'm here to protect"})
    .then(Create_Post)
    .catch(err => console.log(err));

Source: youtube.com

Making promises

new Promise((resolve, reject) => {
  if (ok) { resolve(result) }
  else { reject(error) }
})

Source: devhints.io

Creating a promise

JS
copy
let done = true

const isItDoneYet = new Promise((resolve, reject) => {
  if (done) {
    const workDone = 'Here is the thing I built'
    resolve(workDone)
  } else {
    const why = 'Still working on something else'
    reject(why)
  }
})

Source: nodejs.dev

Similar codes

8 votes243 views6 answers
Cannot be loaded because running scripts is disabled on this system visual studio code
TypeScript
0 vote229 views1 answer
Array with objects read element with the lowest value
TypeScript
13 votes243 views4 answers
Ionic generate resources
TypeScript
0 vote218 views1 answer
Nestjs get request header in guard
TypeScript
1 vote220 views1 answer
A function that prints all numbers from 0 - n Added together python
TypeScript
1 vote246 views1 answer
'mat-label' is not a known element:
TypeScript
0 vote202 views1 answer
Multiline comments coding
TypeScript
0 vote212 views2 answers
Typescript one of the array items
TypeScript
4 votes238 views2 answers
From how many ways we can define props with typescript react
TypeScript
1 vote231 views1 answer
Global d ts
TypeScript