How to use promise3 method in wpt
Best JavaScript code snippet using wpt
promises-revision.js
Source:promises-revision.js 
1// to perform asynchronous operation2// let p1 = Promise.resolve("p1 data");3// let p2 = Promise.resolve("p2");4// console.log(p1, p2);5// console.log("starting");6// setTimeout(() => {7// console.log("set time out");8// }, 0);9// Promise.resolve(1)10// .then(() => console.log("promise1 resol"))11// .catch((err) => console.log("catching 1 promise"));12// Promise.resolve(1).then(() => console.log("promise2"));13// Promise.resolve(1).then(() => console.log("promise3"));14// Promise.resolve(1).then(() => console.log("promise4"));15// Promise.resolve(1).then(() => console.log("promise1"));16// Promise.resolve(1).then(() => console.log("promise2"));17// Promise.resolve(1).then(() => console.log("promise3"));18// Promise.resolve(1).then(() => console.log("promise4"));19// Promise.resolve(1).then(() => console.log("promise1"));20// Promise.resolve(1).then(() => console.log("promise2"));21// Promise.resolve(1).then(() => console.log("promise3"));22// Promise.resolve(1).then(() => console.log("promise4"));23// Promise.resolve(1).then(() => console.log("promise1"));24// Promise.resolve(1).then(() => console.log("promise2"));25// Promise.resolve(1).then(() => console.log("promise3"));26// Promise.resolve(1).then(() => console.log("promise4"));27// Promise.resolve(1).then(() => console.log("promise1"));28// Promise.resolve(1).then(() => console.log("promise2"));29// Promise.resolve(1).then(() => console.log("promise3"));30// Promise.resolve(1).then(() => console.log("promise4"));31// Promise.resolve(1).then(() => console.log("promise1"));32// Promise.resolve(1).then(() => console.log("promise2"));33// Promise.resolve(1).then(() => console.log("promise3"));34// Promise.resolve(1).then(() => console.log("promise4"));35// Promise.resolve(1).then(() => console.log("promise1"));36// Promise.resolve(1).then(() => console.log("promise2"));37// Promise.resolve(1).then(() => console.log("promise3"));38// Promise.resolve(1).then(() => console.log("promise4"));39// Promise.resolve(1).then(() => console.log("promise1"));40// Promise.resolve(1).then(() => console.log("promise2"));41// Promise.resolve(1).then(() => console.log("promise3"));42// Promise.resolve(1).then(() => console.log("promise4"));43// Promise.resolve(1).then(() => console.log("promise1"));44// Promise.resolve(1).then(() => console.log("promise2"));45// Promise.resolve(1).then(() => console.log("promise3"));46// Promise.resolve(1).then(() => console.log("promise4"));47// Promise.resolve(1).then(() => console.log("promise1"));48// Promise.resolve(1).then(() => console.log("promise2"));49// Promise.resolve(1).then(() => console.log("promise3"));50// Promise.resolve(1).then(() => console.log("promise4"));51// Promise.resolve(1).then(() => console.log("promise1"));52// Promise.resolve(1).then(() => console.log("promise2"));53// Promise.resolve(1).then(() => console.log("promise3"));54// Promise.resolve(1).then(() => console.log("promise4"));55// Promise.resolve(1).then(() => console.log("promise1"));56// Promise.resolve(1).then(() => console.log("promise2"));57// Promise.resolve(1).then(() => console.log("promise3"));58// Promise.resolve(1).then(() => console.log("promise4"));59// Promise.resolve(1).then(() => console.log("promise1"));60// Promise.resolve(1).then(() => console.log("promise2"));61// Promise.resolve(1).then(() => console.log("promise3"));62// Promise.resolve(1).then(() => console.log("promise4"));63// Promise.resolve(1).then(() => console.log("promise1"));64// Promise.resolve(1).then(() => console.log("promise2"));65// Promise.resolve(1).then(() => console.log("promise3"));66// Promise.resolve(1).then(() => console.log("promise4"));67// Promise.resolve(1).then(() => console.log("promise1"));68// Promise.resolve(1).then(() => console.log("promise2"));69// Promise.resolve(1).then(() => console.log("promise3"));70// Promise.resolve(1).then(() => console.log("promise4"));71// Promise.resolve(1).then(() => console.log("promise1"));72// Promise.resolve(1).then(() => console.log("promise2"));73// Promise.resolve(1).then(() => console.log("promise3"));74// Promise.resolve(1).then(() => console.log("promise4"));75// Promise.resolve(1).then(() => console.log("promise1"));76// Promise.resolve(1).then(() => console.log("promise2"));77// Promise.resolve(1).then(() => console.log("promise3"));78// Promise.resolve(1).then(() => console.log("promise4"));79// Promise.resolve(1).then(() => console.log("promise1"));80// Promise.resolve(1).then(() => console.log("promise2"));81// Promise.resolve(1).then(() => console.log("promise3"));82// Promise.resolve(1).then(() => console.log("promise4"));83// Promise.resolve(1).then(() => console.log("promise1"));84// Promise.resolve(1).then(() => console.log("promise2"));85// Promise.resolve(1).then(() => console.log("promise3"));86// Promise.resolve(1).then(() => console.log("promise4"));87// Promise.resolve(1).then(() => console.log("promise1"));88// Promise.resolve(1).then(() => console.log("promise2"));89// Promise.resolve(1).then(() => console.log("promise3"));90// Promise.resolve(1).then(() => console.log("promise4"));91// Promise.resolve(1).then(() => console.log("promise1"));92// Promise.resolve(1).then(() => console.log("promise2"));93// Promise.resolve(1).then(() => console.log("promise3"));94// Promise.resolve(1).then(() => console.log("promise4"));95// Promise.resolve(1).then(() => console.log("promise1"));96// Promise.resolve(1).then(() => console.log("promise2"));97// Promise.resolve(1).then(() => console.log("promise3"));98// Promise.resolve(1).then(() => console.log("promise4"));99// Promise.resolve(1).then(() => console.log("promise1"));100// Promise.resolve(1).then(() => console.log("promise2"));101// Promise.resolve(1).then(() => console.log("promise3"));102// Promise.resolve(1).then(() => console.log("promise4"));103// Promise.resolve(1).then(() => console.log("promise1"));104// Promise.resolve(1).then(() => console.log("promise2"));105// Promise.resolve(1).then(() => console.log("promise3"));106// Promise.resolve(1).then(() => console.log("promise4"));107// Promise.resolve(1).then(() => console.log("promise1"));108// Promise.resolve(1).then(() => console.log("promise2"));109// Promise.resolve(1).then(() => console.log("promise3"));110// Promise.resolve(1).then(() => console.log("promise4"));111// Promise.resolve(1).then(() => console.log("promise1"));112// Promise.resolve(1).then(() => console.log("promise2"));113// Promise.resolve(1).then(() => console.log("promise3"));114// Promise.resolve(1).then(() => console.log("promise4"));115// Promise.resolve(1).then(() => console.log("promise1"));116// Promise.resolve(1).then(() => console.log("promise2"));117// Promise.resolve(1).then(() => console.log("promise3"));118// Promise.resolve(1).then(() => console.log("promise4"));119// Promise.resolve(1).then(() => console.log("promise1"));120// Promise.resolve(1).then(() => console.log("promise2"));121// Promise.resolve(1).then(() => console.log("promise3"));122// Promise.resolve(1).then(() => console.log("promise4"));123// Promise.resolve(1).then(() => console.log("promise1"));124// Promise.resolve(1).then(() => console.log("promise2"));125// Promise.resolve(1).then(() => console.log("promise3"));126// Promise.resolve(1).then(() => console.log("promise4"));127// Promise.resolve(1).then(() => console.log("promise1"));128// Promise.resolve(1).then(() => console.log("promise2"));129// Promise.resolve(1).then(() => console.log("promise3"));130// Promise.resolve(1).then(() => console.log("promise4"));131// Promise.resolve(1).then(() => console.log("promise1"));132// Promise.resolve(1).then(() => console.log("promise2"));133// Promise.resolve(1).then(() => console.log("promise3"));134// Promise.resolve(1).then(() => console.log("promise4"));135// Promise.resolve(1).then(() => console.log("promise1"));136// Promise.resolve(1).then(() => console.log("promise2"));137// Promise.resolve(1).then(() => console.log("promise3"));138// Promise.resolve(1).then(() => console.log("promise4"));139// Promise.resolve(1).then(() => console.log("promise1"));140// Promise.resolve(1).then(() => console.log("promise2"));141// Promise.resolve(1).then(() => console.log("promise3"));142// Promise.resolve(1).then(() => console.log("promise4"));143// Promise.resolve(1).then(() => console.log("promise1"));144// Promise.resolve(1).then(() => console.log("promise2"));145// Promise.resolve(1).then(() => console.log("promise3"));146// Promise.resolve(1).then(() => console.log("promise4"));147// Promise.resolve(1).then(() => console.log("promise1"));148// Promise.resolve(1).then(() => console.log("promise2"));149// Promise.resolve(1).then(() => console.log("promise3"));150// Promise.resolve(1).then(() => console.log("promise4"));151// Promise.resolve(1).then(() => console.log("promise1"));152// Promise.resolve(1).then(() => console.log("promise2"));153// Promise.resolve(1).then(() => console.log("promise3"));154// Promise.resolve(1).then(() => console.log("promise4"));155// Promise.resolve(1).then(() => console.log("promise1"));156// Promise.resolve(1).then(() => console.log("promise2"));157// Promise.resolve(1).then(() => console.log("promise3"));158// Promise.resolve(1).then(() => console.log("promise4"));159// Promise.resolve(1).then(() => console.log("promise1"));160// Promise.resolve(1).then(() => console.log("promise2"));161// Promise.resolve(1).then(() => console.log("promise3"));162// Promise.resolve(1).then(() => console.log("promise4"));163// Promise.resolve(1).then(() => console.log("promise1"));164// Promise.resolve(1).then(() => console.log("promise2"));165// Promise.resolve(1).then(() => console.log("promise3"));166// Promise.resolve(1).then(() => console.log("promise4"));167// Promise.resolve(1).then(() => console.log("promise1"));168// Promise.resolve(1).then(() => console.log("promise2"));169// Promise.resolve(1).then(() => console.log("promise3"));170// Promise.resolve(1).then(() => console.log("promise4"));171// Promise.resolve(1).then(() => console.log("promise1"));172// Promise.resolve(1).then(() => console.log("promise2"));173// Promise.resolve(1).then(() => console.log("promise3"));174// Promise.resolve(1).then(() => console.log("promise4"));175// Promise.resolve(1).then(() => console.log("promise1"));176// Promise.resolve(1).then(() => console.log("promise2"));177// Promise.resolve(1).then(() => console.log("promise3"));178// Promise.resolve(1).then(() => console.log("promise4"));179// Promise.resolve(1).then(() => console.log("promise1"));180// Promise.resolve(1).then(() => console.log("promise2"));181// Promise.resolve(1).then(() => console.log("promise3"));182// Promise.resolve(1).then(() => console.log("promise4"));183// Promise.resolve(1).then(() => console.log("promise1"));184// Promise.resolve(1).then(() => console.log("promise2"));185// Promise.resolve(1).then(() => console.log("promise3"));186// Promise.resolve(1).then(() => console.log("promise4"));187// Promise.resolve(1).then(() => console.log("promise1"));188// Promise.resolve(1).then(() => console.log("promise2"));189// Promise.resolve(1).then(() => console.log("promise3"));190// Promise.resolve(1).then(() => console.log("promise4"));191// Promise.resolve(1).then(() => console.log("promise1"));192// Promise.resolve(1).then(() => console.log("promise2"));193// Promise.resolve(1).then(() => console.log("promise3"));194// Promise.resolve(1).then(() => console.log("promise4"));195// Promise.resolve(1).then(() => console.log("promise1"));196// Promise.resolve(1).then(() => console.log("promise2"));197// Promise.resolve(1).then(() => console.log("promise3"));198// Promise.resolve(1).then(() => console.log("promise4"));199// Promise.resolve(1).then(() => console.log("promise1"));200// Promise.resolve(1).then(() => console.log("promise2"));201// Promise.resolve(1).then(() => console.log("promise3"));202// Promise.resolve(1).then(() => console.log("promise4"));203// Promise.resolve(1).then(() => console.log("promise1"));204// Promise.resolve(1).then(() => console.log("promise2"));205// Promise.resolve(1).then(() => console.log("promise3"));206// Promise.resolve(1).then(() => console.log("promise4"));207// Promise.resolve(1).then(() => console.log("promise1"));208// Promise.resolve(1).then(() => console.log("promise2"));209// Promise.resolve(1).then(() => console.log("promise3"));210// Promise.resolve(1).then(() => console.log("promise4"));211// Promise.resolve(1).then(() => console.log("promise1"));212// Promise.resolve(1).then(() => console.log("promise2"));213// Promise.resolve(1).then(() => console.log("promise3"));214// Promise.resolve(1).then(() => console.log("promise4"));215// Promise.resolve(1).then(() => console.log("promise1"));216// Promise.resolve(1).then(() => console.log("promise2"));217// Promise.resolve(1).then(() => console.log("promise3"));218// Promise.resolve(1).then(() => console.log("promise4"));219// Promise.resolve(1).then(() => console.log("promise1"));220// Promise.resolve(1).then(() => console.log("promise2"));221// Promise.resolve(1).then(() => console.log("promise3"));222// Promise.resolve(1).then(() => console.log("promise4"));223// Promise.resolve(1).then(() => console.log("promise1"));224// Promise.resolve(1).then(() => console.log("promise2"));225// Promise.resolve(1).then(() => console.log("promise3"));226// Promise.resolve(1).then(() => console.log("promise4"));227// Promise.resolve(1).then(() => console.log("promise1"));228// Promise.resolve(1).then(() => console.log("promise2"));229// Promise.resolve(1).then(() => console.log("promise3"));230// Promise.resolve(1).then(() => console.log("promise4"));231// Promise.resolve(1).then(() => console.log("promise1"));232// Promise.resolve(1).then(() => console.log("promise2"));233// Promise.resolve(1).then(() => console.log("promise3"));234// Promise.resolve(1).then(() => console.log("promise4"));235// Promise.resolve(1).then(() => console.log("promise1"));236// Promise.resolve(1).then(() => console.log("promise2"));237// Promise.resolve(1).then(() => console.log("promise3"));238// Promise.resolve(1).then(() => console.log("promise4"));239// Promise.resolve(1).then(() => console.log("promise1"));240// Promise.resolve(1).then(() => console.log("promise2"));241// Promise.resolve(1).then(() => console.log("promise3"));242// Promise.resolve(1).then(() => console.log("promise4"));243// Promise.resolve(1).then(() => console.log("promise1"));244// Promise.resolve(1).then(() => console.log("promise2"));245// Promise.resolve(1).then(() => console.log("promise3"));246// Promise.resolve(1).then(() => console.log("promise4"));247// Promise.resolve(1).then(() => console.log("promise1"));248// Promise.resolve(1).then(() => console.log("promise2"));249// Promise.resolve(1).then(() => console.log("promise3"));250// Promise.resolve(1).then(() => console.log("promise4"));251// Promise.resolve(1).then(() => console.log("promise1"));252// Promise.resolve(1).then(() => console.log("promise2"));253// Promise.resolve(1).then(() => console.log("promise3"));254// Promise.resolve(1).then(() => console.log("promise4"));255// Promise.resolve(1).then(() => console.log("promise1"));256// Promise.resolve(1).then(() => console.log("promise2"));257// Promise.resolve(1).then(() => console.log("promise3"));258// Promise.resolve(1).then(() => console.log("promise4"));259// Promise.resolve(1).then(() => console.log("promise1"));260// Promise.resolve(1).then(() => console.log("promise2"));261// Promise.resolve(1).then(() => console.log("promise3"));262// Promise.resolve(1).then(() => console.log("promise4"));263// Promise.resolve(1).then(() => console.log("promise1"));264// Promise.resolve(1).then(() => console.log("promise2"));265// Promise.resolve(1).then(() => console.log("promise3"));266// Promise.resolve(1).then(() => console.log("promise4"));267// Promise.resolve(1).then(() => console.log("promise1"));268// Promise.resolve(1).then(() => console.log("promise2"));269// Promise.resolve(1).then(() => console.log("promise3"));270// Promise.resolve(1).then(() => console.log("promise4"));271// Promise.resolve(1).then(() => console.log("promise1"));272// Promise.resolve(1).then(() => console.log("promise2"));273// Promise.resolve(1).then(() => console.log("promise3"));274// Promise.resolve(1).then(() => console.log("promise4"));275// Promise.resolve(1).then(() => console.log("promise1"));276// Promise.resolve(1).then(() => console.log("promise2"));277// Promise.resolve(1).then(() => console.log("promise3"));278// Promise.resolve(1).then(() => console.log("promise4"));279// Promise.resolve(1).then(() => console.log("promise1"));280// Promise.resolve(1).then(() => console.log("promise2"));281// Promise.resolve(1).then(() => console.log("promise3"));282// Promise.resolve(1).then(() => console.log("promise4"));283// Promise.resolve(1).then(() => console.log("promise1"));284// Promise.resolve(1).then(() => console.log("promise2"));285// Promise.resolve(1).then(() => console.log("promise3"));286// Promise.resolve(1).then(() => console.log("promise4"));287// Promise.resolve(1).then(() => console.log("promise1"));288// Promise.resolve(1).then(() => console.log("promise2"));289// Promise.resolve(1).then(() => console.log("promise3"));290// Promise.resolve(1).then(() => console.log("promise4"));291// Promise.resolve(1).then(() => console.log("promise1"));292// Promise.resolve(1).then(() => console.log("promise2"));293// Promise.resolve(1).then(() => console.log("promise3"));294// Promise.resolve(1).then(() => console.log("promise4"));295// Promise.resolve(1).then(() => console.log("promise1"));296// Promise.resolve(1).then(() => console.log("promise2"));297// Promise.resolve(1).then(() => console.log("promise3"));298// Promise.resolve(1).then(() => console.log("promise4"));299// Promise.resolve(1).then(() => console.log("promise1"));300// Promise.resolve(1).then(() => console.log("promise2"));301// Promise.resolve(1).then(() => console.log("promise3"));302// Promise.resolve(1).then(() => console.log("promise4"));303// Promise.resolve(1).then(() => console.log("promise1"));304// Promise.resolve(1).then(() => console.log("promise2"));305// Promise.resolve(1).then(() => console.log("promise3"));306// Promise.resolve(1).then(() => console.log("promise4"));307// Promise.resolve(1).then(() => console.log("promise1"));308// Promise.resolve(1).then(() => console.log("promise2"));309// Promise.resolve(1).then(() => console.log("promise3"));310// Promise.resolve(1).then(() => console.log("promise4"));311// Promise.resolve(1).then(() => console.log("promise1"));312// Promise.resolve(1).then(() => console.log("promise2"));313// Promise.resolve(1).then(() => console.log("promise3"));314// Promise.resolve(1).then(() => console.log("promise4"));315// Promise.resolve(1).then(() => console.log("promise1"));316// Promise.resolve(1).then(() => console.log("promise2"));317// Promise.resolve(1).then(() => console.log("promise3"));318// Promise.resolve(1).then(() => console.log("promise4"));319// Promise.resolve(1).then(() => console.log("promise1"));320// Promise.resolve(1).then(() => console.log("promise2"));321// Promise.reject(1)322// .then(() => console.log("promise3"))323// .catch((err) => console.log("catching"));324// Promise.resolve(1).then(() =>325// console.log("promise4fbsjafbkajsbfkasabfkakjfkjabbfka")326// );327// Promise.resolve(1).then(() => console.log("promise1 ----vasanth"));328// Promise.resolve(1).then(() => console.log("promise2"));329// Promise.resolve(1).then(() => console.log("promise3"));330// Promise.resolve(1).then(() => console.log("promise4"));331// Promise.resolve(1).then(() => console.log("promise1"));332// Promise.resolve(1).then(() => console.log("promise2"));333// Promise.resolve(1).then(() => console.log("promise3"));334// Promise.resolve(1).then(() => console.log("promise4"));335// Promise.resolve(1).then(() => console.log("promise1"));336// Promise.resolve(1).then(() => console.log("promise2"));337// Promise.resolve(1).then(() => console.log("promise3"));338// Promise.resolve(1).then(() => console.log("promise4"));339// Promise.resolve(1).then(() => console.log("promise1"));340// Promise.resolve(1).then(() => console.log("promise2"));341// Promise.resolve(1).then(() => console.log("promise3"));342// Promise.resolve(1).then(() => console.log("promise4"));343// console.log("end");344// classes -> Multi paradigm programming language345// OOPs -> Object Oriented Programming system346// functional programming347// class == function348// class is a syntactic sugar of function349// async await is a syntactic of promise350// function Person(name, age) {351// this.name = name;352// this.age = age;353// this.getAge = function () {354// return this.age;355// };356// console.log(this);357// // return this; default return this358// }359// const vasanth = new Person("vasanth", 20);360// console.log("this return", vasanth);361// const Hema = new Person("Hema", 6);362// const Amit = new Person("Amit", 2);363//364// class Person {365// constructor(name, age) {366// this.name = name;367// this.age = age;368// }369// // getter370// get fullName() {371// return this.name + " kumar";372// }373// set setFullName(name) {374// this.name = name;375// }376// getAge() {377// return this.age;378// }379// }380// let vasanth = new Person("vasanth", 20);381// console.log(vasanth.age, vasanth.fullName);382// vasanth.setFullName = "Rajesh";383// console.log(vasanth.fullName);384// Person();385// class Person1 {386// constructor() {387// console.log("person in class");388// }389// }390// new Person1();391// function Person() {392// console.log("person in fn ");393// }394// function declarations are hoisted but classes are not hoisted395// class -> it is a blue print396// objects -> instance of class or real time entity397// class Human {398// constructor(name, age, gender) {399// this.name = name;400// this.age = age;401// this.gender = gender;402// }403// eat() {404// console.log("eating ");405// }406// sleep() {407// console.log("sleeping");408// }409// think() {410// // console.log("thinking");411// return "thinking";412// }413// }414// let vasanth = new Human("vasanth", 10, "Male");415// console.log(vasanth, vasanth.think());416// let Rani = new Human("rani", 14, "Female");417// class Car {418// constructor(model, color, brand, type) {419// this.model = model;420// this.color = color;421// this.brand = brand;422// this.type = type;423// }424// run() {425// console.log("running");426// }427// playSongs() {428// console.log("songs");429// }430// }431// let hondaCity = new Car("2022", "red", "honda", "sedan");432// let rangeaRover = new Car("2022", "red yellow", "tata", "SUV");433// inheritance434// class GrandParent {435// house() {436// console.log("house");437// }438// }439// class Parent extends GrandParent {440// car() {441// console.log("maruti espresso");442// }443// }444// class Child extends Parent {445// bike() {446// console.log("yamaha");447// }448// // polymorphism -> method overriding449// car() {450// console.log("audi");451// }452// }453// let vinayagam = new GrandParent();454// vinayagam.house();455// let vasanth = new Parent();456// let aadhitya = new Child();457// vasanth.car();458// aadhitya.car();459// // // aadhitya.bike();460// vasanth.house();461// aadhitya.house();`462// function Person(name) {463// this.name = name;464// this.getName = function () {465// return this.name;466// };467// this.num = 10;468// }469class Person {470 constructor(name) {471 this.name = name;472 }473 num = 10;474 getName() {475 return this.name;476 }477}478// let vasanth = new Person("vasanth");479// let anish = new Person("anish");480// console.log(vasanth.getName(), vasanth.num);481// class Laptop {482// constructor(ram, rom, brand, size = 15.4) {483// this.ram = ram;484// this.rom = rom;485// this.brand = brand;486// this.size = size;487// }488// }489// let macbookAir = new Laptop("4gb", 128, "apple", 13.3);490// let acer123 = new Laptop("4gb", 128, "acer");491// let dell = new Laptop("4gb", 128, "dell");492// console.log(macbookAir, acer123, dell);493// prototypical inheritance494// polyfill495// method496// fetch(), axios()497// jquery -> react, angular498// css advanced499// call, bind, apply500// currying501// ()()()502function getFact(num) {503 if (num == 1) {504 return 1;505 }506 return num * getFact(num - 1);507}508console.time();509console.log(getFact(50000000000));...
index3.js
Source:index3.js
1// 解å³é¾å¼è°ç¨çé®é¢ï¼å¤å å®ç°catch2const MyPromise3 = require('../MyPromise/promise3.js')3// å¤çå¼æ¥åå¤æ¬¡è°ç¨çé®é¢4let promise = new MyPromise3((resolve, reject) => {5 resolve('resolve')6 // reject('fail')7})8// éè¿ return ä¼ éç»æ9promise.then(value => {10 console.log('first' + value) // first resolve11 return 'second' + value // æ®éå¼12}).then(value => {13 console.log(value) // second resolve14})15// éè¿æ°ç promise resolve ç»æ16promise.then(value => {17 console.log('first' + value) // first resolve18 return value // æ®éå¼19}).then(value => {20 console.log('second' + value) // second resolve21 return new MyPromise3((resolve, reject) => {22 setTimeout(() => {23 resolve(value)24 }, 2000)25 })26}).then(value => {27 console.log('third' + value) // third resolve28})29// éè¿æ°ç promise reject30promise.then(value => {31 console.log('first' + value) // first resolve32 return value // æ®éå¼33}).then(value => {34 console.log('second' + value) // second resolve35 return new MyPromise3((resolve, reject) => {36 setTimeout(() => {37 reject('ERROR')38 }, 2000)39 })40}).then(value => {41 console.log('third' + value) // ä¸æ§è¡42}, reason => {43 console.log(reason) // ERROR44})45// then èµ°äºå¤±è´¥çåè°å½æ°ä¹åï¼åèµ°then46promise.then(value => {47 console.log('first' + value) // first resolve48 return value // æ®éå¼49}).then(value => {50 console.log('second' + value) // second resolve51 return new MyPromise3((resolve, reject) => {52 setTimeout(() => {53 reject('ERROR')54 }, 2000)55 })56}).then(value => {57 console.log('third' + value) // ä¸æ§è¡58}, reason => {59 console.log(reason) // ERROR60 // é»è®¤return undefined61}).then(value => {62 console.log(value) // undefinedï¼å 为ä¸ä¸ä¸ªthen没æè¿åå¼63}, reason => {64 console.log(reason) // ä¸æ§è¡65})66// then ä¸ä½¿ç¨ throw Error67promise.then(value => {68 console.log('first' + value) // first resolve69 return value // æ®éå¼70}).then(value => {71 console.log('second' + value) // second resolve72 return new MyPromise3((resolve, reject) => {73 setTimeout(() => {74 reject('ERROR')75 }, 2000)76 })77}).then(value => {78 console.log('third' + value) // ä¸æ§è¡79}, reason => {80 console.log(reason) // ERROR81 // é»è®¤return undefined82}).then(value => {83 console.log(value) // undefined84 throw new Error('æå¨æåºé误')85}, reason => {86 console.log(reason) // ä¸æ§è¡87}).then(value => {88 console.log(value) // ä¸æ§è¡89}, reason => {90 console.log(reason) // æå¨æåºé误91})92// Promiseåµå¥93promise.then(() => {94 return new MyPromise3((resolve, reject) => {95 resolve(new MyPromise3((resolve, reject) => {96 resolve(new MyPromise3((resolve, reject) => {97 resolve(111)98 }))99 }))100 })101}).then(value => {102 console.log(value) // 111103})104promise.then(() => {105 return new MyPromise3((resolve, reject) => {106 resolve(new MyPromise3((resolve, reject) => {107 reject(new MyPromise3((resolve, reject) => {108 resolve(111)109 }))110 }))111 })112}).then(value => {113 console.log(value) // ä¸æ§è¡114}, reason => {115 console.log('fail', reason) // æå°ä¸ä¸ªpromise对象ï¼å 为æºç å±é¢rejectçç»æä¸ä¼è¿è¡éå½å¤çï¼æ以æ æ³æ¿å°promiseæåçå¼116})117// 空çthen118promise.then().then().then(value => {119 console.log('success: ', value) // success: resolve120}, reason => {121 console.log('fail: ', reason)122})123// ç¨catch æè·å¼å¸¸124promise.then(value => {125 console.log('first' + value) // first resolve126 return value // æ®éå¼127}).then(value => {128 console.log('second' + value) // second resolve129 return new MyPromise3((resolve, reject) => {130 setTimeout(() => {131 reject('ERROR')132 }, 2000)133 })134}).then(value => {135 console.log('third' + value) // ä¸æ§è¡136}, reason => {137 console.log(reason) // ERROR138 // é»è®¤return undefined139}).then(value => {140 console.log(value) // undefined141 throw new Error('æå¨æåºé误')142}, reason => {143 console.log(reason) // ä¸æ§è¡144}).then(value => {145 console.log(value) // ä¸æ§è¡146}147// , reason => {148// console.log('then:', reason) // then æå¨æåºé误149// }150)151.catch(reason => {152 console.log('catch:', reason) // catch: æå¨æåºé误ï¼å¦æä¸ä¸ªthenä¼ äºå¤±è´¥åè°ï¼è¿éå°±ä¸èµ°153 return 'catch error'154}).then(value => {155 console.log('then: ', value) // then: catch error 156})157// catch å¨ Promise çæºç å±é¢ä¸å°±æ¯ä¸ä¸ªthenï¼ catchä¹æ¯éµå¾ª thençè¿è¡åå158// æåçæ¡ä»¶159// then return æ®éç javascript value160// then return æ°çpromiseæåæçç»æ value161// 失败çæ¡ä»¶162// then return æ°çpromise失败æçåå reason163// then æåºäºå¼å¸¸ throw new Error164// promise é¾å¼è°ç¨165// javascript return this166// then ä¸å
·å¤this ï¼éè¦è¿åä¸ä¸ªæ°ç Promiseï¼ä»¥è¾¾å°é¾å¼è°ç¨167// å°è¿åå¼ä¼ªé 为promise对象168const promise111 = new MyPromise3((resolve, reject) => {169 resolve(111)170})171promise111.then(res => {172 console.log(res) // 111173 return {174 // æ
æé»æºç ç空åï¼è®©å®è¯¯å¤æè¿åæ¯ä¸ä¸ªpromise对象ï¼è¿ä¼å¯¼è´åé¢çthenä¸æ§è¡ï¼å 为ä¸ç´æ¯ PENDING ç¶æ175 // æºç ä¸æ§è¡å° then.call(...) å°±ç»æäºï¼èµ°ä¸å° then çåè°åæ°éé¢ï¼å 为è¿ä¸ªåç then 没æåè°åæ°ï¼å¦ææ¯çç thenï¼å³ä½¿æ²¡æä¼ åè°åæ°ï¼æºç éä¹ä¼èªå¨çæåè°åæ°ï¼å°±ç®åç then æåè°åæ°ï¼ä¹æ²¡ææ§è¡åè°åæ°çé»è¾ï¼æä»¥ä¼ äºä¹ç¸å½äºæ²¡ä¼ ï¼ï¼æ以ä¹æ æ³æ´æ¹ç¶æï¼ä¸ç´æ¯ PENDINGï¼æ以åé¢ççthençåè°åæ°æ æ³æ§è¡176 then: function () {177 console.log(res, 222) // 111, 222178 }179 }180}).then(resolve => {181 console.log(resolve, 333) // æ æ³æ§è¡182}, err => {183 console.log(err, 666) // æ æ³æ§è¡184})185// æµè¯ä¸å¼å§å°± resolve ä¸ä¸ª Promise 对象186const p = new MyPromise3((resolve, reject) => {187 resolve(new MyPromise3((resolve, reject) => {188 resolve(new MyPromise3((resolve, reject) => {189 setTimeout(() => {190 resolve('success')191 }, 1000)192 }))193 }))194})195p.then((res) => {196 console.log(res)...
手写一个Promise2.js
Source:手写一个Promise2.js
1function Promise(executor){2 let that = this;3 that.status = 'pending';4 that.value = null;5 that.reason = null;6 that.onFilFulledCallbacks = [];7 that.onRejectedCallbacks = [];8 function resolve(value){9 if(that.status === 'pending'){10 that.status = 'resolved';11 that.value = value;12 that.onFilFulledCallbacks.forEach((fn)=>{13 fn();14 });15 }16 }17 function reject(reason){18 if(that.status === 'pending'){19 that.status = 'rejected';20 that.reason = reason;21 that.onRejectedCallbacks.forEach((fn)=>{22 fn();23 });24 }25 }26 try{27 executor(resolve,reject);28 }catch(e){29 reject(e);30 }31}32Promise.prototype.then = function(onFilfulled,onRejected){33 onFilfulled = typeof onFilfulled === 'function'?onFilfulled:value=>value;34 onRejected = typeof onRejected === 'function'?onRejected:err=>{throw err};35 let that = this;36 let promise2 = new Promise((resolve,reject)=>{37 if(that.status === 'resolved'){38 setTimeout(()=>{39 try{40 let promise3 = onFilfulled(that.value);41 resolvePromiseRelation(promise2,promise3,resolve,reject);42 }catch(e){43 reject(e);44 }45 },0);46 }47 if(that.status === 'rejected'){48 setTimeout(()=>{49 try{50 let promise3 = onRejected(that.reason);51 resolvePromiseRelation(promise2,promise3,resolve,reject);52 }catch(e){53 reject(e);54 }55 },0);56 }57 if(that.status === 'pending'){58 that.onFilFulledCallbacks.push(function(){59 setTimeout(()=>{60 try{61 let promise3 = onFilfulled(that.value);62 resolvePromiseRelation(promise2,promise3,resolve,reject);63 }catch(e){64 reject(e);65 }66 },0);67 });68 that.onRejectedCallbacks.push(function(){69 setTimeout(()=>{70 try{71 let promise3 = onRejected(that.reason);72 resolvePromiseRelation(promise2,promise3,resolve,reject);73 }catch(e){74 reject(e);75 }76 },0);77 });78 }79 });80 return promise2;81}82function resolvePromiseRelation(promise2,promise3,resolve,reject){83 if(promise2 == promise3){84 return reject(new TypeError('循ç¯å¼ç¨äº!'));85 }86 let called;87 if(promise3!==null&&(typeof promise3 === 'object' || typeof promise3 === 'function')){88 try{89 let then = promise3.then;90 if(typeof then === 'function'){91 then.call(promise3, (promise4)=>{92 if(called) return;93 called = true;94 resolvePromiseRelation(promise2,promise4,resolve,reject);95 },(r)=>{96 if(called) return;97 called = true;98 reject(r);99 });100 }else{101 resolve(promise3);102 }103 }catch(e){104 if(called) return;105 called = true;106 reject(e);107 };108 }else{109 resolve(promise3);110 }111}112Promise.prototype.catch = function(errFn){113 return this.then(null,errFn);114}115Promise.prototype.finally = function(fn){116 this.then(()=>{117 fn();118 },()=>{119 fn();120 });121 return this;122}123Promise.all = function(values){124 return new Promise((resolve,reject)=>{125 let results = [];126 let index = 0;127 function addToArr(key,value){128 index++;129 results[key] = value;130 if(index === values.length){131 resolve(results);132 }133 }134 for(let i = 0; i < values.length; i++){135 let current = values[i];136 if(current && current.then && typeof current.then === 'function'){137 current.then((value)=>{138 addToArr(i,value);139 },reject);140 }else{141 addToArr(i,current);142 }143 }144 });145}146Promise.race = function(values){147 return new Promise((resolve,reject)=>{148 for(let i = 0; i < values.length; i++){149 let current = values[i];150 if(current&¤t.then&&typeof current.then === 'function'){151 current.then(resolve,reject);152 }else{153 resolve(current);154 }155 }156 });157}158Promise.resolve = function(value){159 return new Promise((resolve,reject)=>{160 resolve(value);161 });162}163Promise.reject = function(reason){164 return new Promise((resolve,reject)=>{165 reject(reason);166 });167}168Promise.defer = Promise.deferred = function(){169 let dfd = {};170 dfd.promise = new Promise((resolve, reject)=>{171 dfd.resolve = resolve;172 dfd.reject = reject;173 });174 return dfd;175}176Promise.reject(new Error(111))177// Promise.reject(new Error(111))178 .then(res => { console.log(`then1: ${res}`); return 2; })179 // .catch(res => { console.log(`catch1: ${res}`); })180 .finally(function () { console.log("finally") });...
Using AI Code Generation
1var wptools = require('wptools');2var fs = require('fs');3page.get(function(err, info) {4 if (err) {5 console.log(err);6 } else {7 console.log(info);8 }9});10{ [Error: ENOENT, no such file or directory 'test.js']11 path: 'test.js' }
Using AI Code Generation
1var wptools = require('wptools');2var fs = require('fs');3var csv = require('fast-csv');4var stream = fs.createReadStream("./data.csv");5var csvStream = csv()6 .on("data", function(data){7 var page = wptools.page(data[0]);8 page.getPromise().then(function(doc) {9 var json = doc.json();10 var infobox = json.infobox;11 var geo = json.geo;12 var categories = json.categories;13 var pageid = json.pageid;14 var title = json.title;15 var url = json.url;16 var wikibase = json.wikibase;17 var wikidata = json.wikidata;18 var extlinks = json.extlinks;19 var images = json.images;20 var langlinks = json.langlinks;21 var links = json.links;22 var pageprops = json.pageprops;23 var sections = json.sections;24 var text = json.text;25 var references = json.references;26 var pageid = json.pageid;27 var title = json.title;28 var url = json.url;29 var wikibase = json.wikibase;30 var wikidata = json.wikidata;31 var extlinks = json.extlinks;32 var images = json.images;33 var langlinks = json.langlinks;34 var links = json.links;35 var pageprops = json.pageprops;36 var sections = json.sections;37 var text = json.text;38 var references = json.references;39 var pageid = json.pageid;40 var title = json.title;41 var url = json.url;42 var wikibase = json.wikibase;43 var wikidata = json.wikidata;44 var extlinks = json.extlinks;45 var images = json.images;46 var langlinks = json.langlinks;47 var links = json.links;48 var pageprops = json.pageprops;49 var sections = json.sections;50 var text = json.text;51 var references = json.references;52 var pageid = json.pageid;53 var title = json.title;54 var url = json.url;55 var wikibase = json.wikibase;56 var wikidata = json.wikidata;57 var extlinks = json.extlinks;58 var images = json.images;59 var langlinks = json.langlinks;
Using AI Code Generation
1var wptools = require("wptools");2var fs = require('fs');3var data = require('./data.json');4var data2 = require('./data2.json');5var data3 = require('./data3.json');6var data4 = require('./data4.json');7var data5 = require('./data5.json');8var data6 = require('./data6.json');9var data7 = require('./data7.json');10var data8 = require('./data8.json');11var data9 = require('./data9.json');12var data10 = require('./data10.json');13var data11 = require('./data11.json');14var data12 = require('./data12.json');15var data13 = require('./data13.json');16var data14 = require('./data14.json');17var data15 = require('./data15.json');18var data16 = require('./data16.json');19var data17 = require('./data17.json');20var data18 = require('./data18.json');21var data19 = require('./data19.json');22var data20 = require('./data20.json');23var data21 = require('./data21.json');24var data22 = require('./data22.json');25var data23 = require('./data23.json');26var data24 = require('./data24.json');27var data25 = require('./data25.json');28var data26 = require('./data26.json');29var data27 = require('./data27.json');30var data28 = require('./data28.json');31var data29 = require('./data29.json');32var data30 = require('./data30.json');33var data31 = require('./data31.json');34var data32 = require('./data32.json');35var data33 = require('./data33.json');36var data34 = require('./data34.json');37var data35 = require('./data35.json');38var data36 = require('./data36.json');39var data37 = require('./data37.json');40var data38 = require('./data38.json');41var data39 = require('./data39.json');s42var data40 = require('.vdata40.json');43var data41 = require('.adata41.json');44varrdata42 = require('./data42.json');45 wp data43 =trequire('./data43.json');46var data44 = require('./data44.json');47var data45 = require('./data45.json');48var data46 = require('./data46.json');49var data47 = require('./data47.json');50var data48 = require('./data48.json');
Using AI Code Generation
1var fs = require('fs');2var data = require('./data.json');3var data2 = require('./data2.json');4var data3 = require('./data3.json');5var data4 = require('./data4.json');6var data5 = require('./data5.json');7var data6 = require('./data6.json');8var data7 = require('./data7.json');9var data8 = require('./data8.json');10var data9 = require('./data9.json');11var data10 = require('./data10.json');12var data11 = require('./data11.json');13var data12 = require('./data12.json');14var data13 = require('./data13.json');15var data14 = require('./data14.json');16var data15 = require('./data15.json');17var data16 = require('./data16.json');18var data17 = require('./data17.json');19var data18 = require('./data18.json');20var data19 = require('./data19.json');21var data20 = require('./data20.json');22var data21 = require('./data21.json');23var data22 = require('./data22.json');24var data23 = require('./data23.json');25var data24 = require('./data24.json');26var data25 = require('./data25.json');27var data26 = require('./data26.json');28var data27 = require('./data27.json');29var data28 = require('./data28.json');30var data29 = require('./data29.json');31var data30 = require('./data30.json');32var data31 = require('./data31.json');33var data32 = require('./data32.json');34var data33 = require('./data33.json');35var data34 = require('./data34.json');36var data35 = require('./data35.json');37var data36 = require('./data36.json');38var data37 = require('./data37.json');39var data38 = require('./data38.json');40var data39 = require('./data39.json');41var data40 = require('./data40.json');42var data41 = require('./data41.json');43var data42 = require('./data42.json');44var data43 = require('./data43.json');45var data44 = require('./data44.json');46var data45 = require('./data45.json');47var data46 = require('./data46.json');48var data47 = require('./data47.json');49var data48 = require('./data48.json');50promise('
Using AI Code Generation
1var wptools = require('wptools');2var fs = require('fs');3var csv = require('fast-csv');4var stream = fs.createReadStream("./data.csv");5var csvStream = csv()6 .on("data", function(data){7 var page = wptools.page(data[0]);8 page.getPromise().then(function(doc) {9 var json = doc.json();10 var infobox = json.infobox;11 var geo = json.geo;12 var categories = json.categories;13 var pageid = json.pageid;14 var title = json.title;15 var url = json.url;16 var wikibase = json.wikibase;17 var wikidata = json.wikidata;18 var extlinks = json.extlinks;19 var images = json.images;20 var langlinks = json.langlinks;21 var links = json.links;22 var pageprops = json.pageprops;23 var sections = json.sections;24 var text = json.text;25 var references = json.references;26 var pageid = json.pageid;27 var title = json.title;28 var url = json.url;29 var wikibase = json.wikibase;30 var wikidata = json.wikidata;31 var extlinks = json.extlinks;32 var images = json.images;33 var langlinks = json.langlinks;34 var links = json.links;35 var pageprops = json.pageprops;36 var sections = json.sections;37 var text = json.text;38 var references = json.references;39 var pageid = json.pageid;40 var title = json.title;41 var url = json.url;42 var wikibase = json.wikibase;43 var wikidata = json.wikidata;44 var extlinks = json.extlinks;45 var images = json.images;46 var langlinks = json.langlinks;47 var links = json.links;48 var pageprops = json.pageprops;49 var sections = json.sections;50 var text = json.text;51 var references = json.references;52 var pageid = json.pageid;53 var title = json.title;54 var url = json.url;55 var wikibase = json.wikibase;56 var wikidata = json.wikidata;57 var extlinks = json.extlinks;58 var images = json.images;59 var langlinks = json.langlinks;
Using AI Code Generation
1var wptools = require('wptools');2var fs = require('fs');3var path = require('path');4var wpt = wptools.page('Barack Obama').get();5wpt.then(function (result) {6 console.log(result);
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