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

0 vote167 views1 answer
Factory design pattern typescript
TypeScript
0 vote165 views1 answer
Checked a element is focused with its key pressed
TypeScript
0 vote159 views1 answer
How can i add multiple arguments in discord,js
TypeScript
1 vote154 views1 answer
How to generate test data
TypeScript
0 vote174 views1 answer
Products = product.object.all() python
TypeScript
0 vote199 views1 answer
Requests to check is url exists in python using function
TypeScript
-1 vote158 views1 answer
Div resize event typescript
TypeScript
39 votes179 views6 answers
Cannot be loaded because running scripts is disabled on this system. For more information, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.
TypeScript
-3 votes168 views1 answer
How to implement Bootstrap 4 for Angular 2 ngb-pagination
TypeScript
1 vote163 views1 answer
Can't bind to 'mat-dialog-close' since it isn't a known property of 'button'
TypeScript