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

3 votes234 views1 answer
Arraylist of objects in java
TypeScript
0 vote210 views1 answer
Can ts object be strongly typed?
TypeScript
1 vote214 views1 answer
Ion2 calendar locale
TypeScript
0 vote264 views1 answer
Sql concepts interview questions
TypeScript
4 votes239 views1 answer
Get back some commits git
TypeScript
26 votes216 views3 answers
How to install typescript in windows 10
TypeScript
2 votes211 views1 answer
Vscode custom snippets how to use file name
TypeScript
6 votes222 views1 answer
Check if key is in the js object
TypeScript
0 vote200 views1 answer
Fgets input from user
TypeScript
0 vote224 views1 answer
CUSTOM_ELEMENTS_SCHEMA error occur while unit testing with jasmine and karma
TypeScript