js_example/async.js at master · idrisoff/js_example · GitHub

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// var arr = ["Яблоко", "Апельсин", "Груша"];

//const { reject } = require("async");

// arr.forEach(function(item, i, arr) {
//   alert( i + ": " + item + " (массив:" + arr + ")" );
// });
console.log('Request data...');

// setTimeout(() => {
//   console.log('Preparing data...')

//   const backendData = {
//     server: 'aws',
//     port: 2000,
//     status: 'working'
//   }
//   setTimeout(() => {
//     backendData.modified = true
//     console.log('Data received', backendData);
//   }, 2000)
// }, 2000)

const p = new Promise((resolve, reject) => {
  setTimeout(() => {
    console.log('Preparing data...')

  const backendData = {
    server: 'aws',
    port: 2000,
    status: 'working'
  }
  resolve(backendData)
  },2000)
})

p.then((data) => {
  const p2 = new Promise((resolve, reject) => {
    setTimeout(() => {
      data.modified = true
      resolve(data)
    }, 2000)
  })
  p2.then(clientData => {
    console.log('Data received', clientData);
  })
})