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 votes319 views1 answer
Label points in plot in r
TypeScript
0 vote318 views1 answer
HOW TO DROP ALL TABLES WITH THEIR CONSTRAINTS AT ONCE IN ORACLE
TypeScript
0 vote307 views1 answer
Running scripts is disabled on this system
TypeScript
2 votes328 views2 answers
Remove all the elements from a numpy array python
TypeScript
0 vote307 views1 answer
.htaccess Forcing scripts to display as source code
TypeScript
0 vote340 views1 answer
How to add array of objects in swagger 2.0
TypeScript
1 vote304 views1 answer
Benefits eat halim plant leaves
TypeScript
0 vote350 views3 answers
Highcharts cdn links
TypeScript
0 vote313 views1 answer
Create n sublists python
TypeScript
0 vote351 views1 answer
Reverse a string if its value its greater than 3
TypeScript