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+// const gql = (url, query, variables={}) =>
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+// fetch(url, {
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+// method: 'POST',
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+// body: JSON.stringify({query,variables}),
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+// headers: {
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+// 'Content-Type': 'application/json',
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+// }
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+// }).then((res) => res.json());
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+
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+// (async () => {
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+// console.log(await gql(`http://shop-roles.asmer.fs.a-level.com.ua/graphql`, `query cats{
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+// CategoryFind(query:"[{}]"){
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+// name goods{
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+// name
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+// }
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+// }
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+// }`))
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+// })()
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+
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+
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+
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+
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+// const getGQL = url =>
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+// (query, variables) => fetch(url, {
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+// //метод
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+// method: 'POST',
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+// headers: {
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+// //заголовок content-type
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+// "Content-Type": "application/json"
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+// },
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+// body: JSON.stringify({query, variables})
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+// //body с ключами query и variables
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+
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+// }).then(res => res.json()).then(
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+// obj => {
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+// let login = obj.data.login;
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+// console.log(login);
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+
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+// if (!login) {
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+// throw new Error('login undefind');
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+// }
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+// return login;;
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+// })
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+
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+// //расковырять data, если все ок - отдать data.login или data.CategoryFindOne, или шо там еще
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+// //если есть errors и нет data, то выбросить исключение и тем самым зареджектить промис
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+
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+// .catch(console.log)
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+
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+// const gql = getGQL('http://shop-roles.asmer.fs.a-level.com.ua/graphql');
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+// gql(`
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+// query NameForMe1($login:String, $password:String){
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+// login(login:$login, password:$password)
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+// }
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+// `, {login: 'tst', password: '123'})
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+
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+
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+//Task Светофор
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+
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+// const div = document.createElement('div');
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+// div.id = 'trafficLights';
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+// div.style.backgroundColor = 'rgb(59, 52, 52)';
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+// div.style.width = '200px';
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+// div.style.height = '350px';
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+
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+// const divRed = document.createElement('div');
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+// divRed.id = 'red';
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+// divRed.style.backgroundColor = 'rgb(232, 235, 209)';
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+// divRed.style.width = '90px';
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+// divRed.style.height = '90px';
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+// divRed.style.marginLeft = "27%";
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+// divRed.style.marginTop = "7%";
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+// divRed.style.display = 'inline-block';
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+// divRed.style.borderRadius = '50px';
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+
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+// const divOrange = document.createElement('div');
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+// divOrange.id = 'orange';
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+// divOrange.style.backgroundColor = 'rgb(232, 235, 209)';
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+// divOrange.style.width = '90px';
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+// divOrange.style.height = '90px';
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+// divOrange.style.marginLeft = "27%";
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+// divOrange.style.marginTop = "10%";
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+// divOrange.style.borderRadius = '50px';
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+
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+// const divGreen = document.createElement('div');
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+// divGreen.id = 'green';
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+// divGreen.style.backgroundColor = 'rgb(232, 235, 209)';
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+// divGreen.style.width = '90px';
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+// divGreen.style.height = '90px';
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+// divGreen.style.marginLeft = "27%";
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+// divGreen.style.marginTop = "10%";
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+// divGreen.style.borderRadius = '50px';
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+
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+// document.body.append(div);
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+// div.append(divRed);
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+// div.append(divOrange);
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+// div.append(divGreen);
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+
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+// const delay = ms => new Promise(ok => setTimeout(() => ok(ms), ms))
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+
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+// async function trafficLight(){
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+// while (true){
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+// divGreen.style.backgroundColor = 'green';//включаем зеленый
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+// await delay(6000);
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+// divGreen.style.backgroundColor = 'rgb(232, 235, 209)';
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+// divOrange.style.backgroundColor = 'rgb(237, 138, 57)';// включаем желтый
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+// await delay(2000);
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+// divOrange.style.backgroundColor = 'rgb(232, 235, 209)';
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+// divRed.style.backgroundColor = 'rgb(235, 12, 23)'; //включаем красный
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+// await delay(3500);
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+// divRed.style.backgroundColor = 'rgb(232, 235, 209)';
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+// }
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+// }
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+// trafficLight();
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+
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+
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+
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+ //Task domEventPromise
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+
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+
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+// const button = document.createElement('button');
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+// document.body.appendChild(button).innerText = "Click";
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+
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+// function domEventPromise (knopka, eventName) {
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+// return new Promise((resolve) => {
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+// knopka.addEventListener(eventName, function getEvent(e) {
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+// this.removeEventListener(eventName, getEvent);
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+// resolve(e);
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+// });
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+// })
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+// }
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+
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+// domEventPromise(button, 'click').then((e) => {
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+// console.log('event click happens', e);
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+// })
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+
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+
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+
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+// PedestrianTrafficLight
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+
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+
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+// const div = document.createElement('div');
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+// div.id = 'trafficLights';
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+// div.style.backgroundColor = 'rgb(59, 52, 52)';
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+// div.style.width = '200px';
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+// div.style.height = '350px';
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+
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+// const divRed = document.createElement('div');
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+// divRed.id = 'red';
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+// divRed.style.backgroundColor = 'rgb(232, 235, 209)';
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+// divRed.style.width = '90px';
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+// divRed.style.height = '90px';
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+// divRed.style.marginLeft = "27%";
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+// divRed.style.marginTop = "7%";
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+// divRed.style.display = 'inline-block';
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+// divRed.style.borderRadius = '50px';
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+
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+// const divGreen = document.createElement('div');
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+// divGreen.id = 'green';
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+// divGreen.style.backgroundColor = 'rgb(232, 235, 209)';
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+// divGreen.style.width = '90px';
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+// divGreen.style.height = '90px';
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+// divGreen.style.marginLeft = "27%";
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+// divGreen.style.marginTop = "10%";
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+// divGreen.style.borderRadius = '50px';
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+
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+// document.body.append(div);
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+// div.append(divRed);
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+// div.append(divGreen);
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+
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+// const delay = ms => new Promise(ok => setTimeout(() => ok(ms), ms))
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+
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+// const button = document.createElement('button');
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+// document.body.appendChild(button).innerText = "Click";
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+// button.style.marginTop = "30px";
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+
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+// function domEventPromise (knopka, eventName) {
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+// return new Promise((resolve) => {
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+// knopka.addEventListener(eventName, function getEvent(e) {
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+// this.removeEventListener(eventName, getEvent);
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+// button.setAttribute('disabled', true);
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+// divRed.style.backgroundColor = 'rgb(232, 235, 209)';
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+// divGreen.style.backgroundColor = 'green';
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+// delay(2000).then(() => button.removeAttribute('disabled'));
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+// resolve(e);
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+// })
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+// })
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+// }
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+
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+// async function trafficLight(){
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+// while (true){
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+// divRed.style.backgroundColor = 'rgb(232, 235, 209)';
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+// divGreen.style.backgroundColor = 'green';
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+// await Promise.race([delay(2000), domEventPromise(button, 'click')]);
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+// divRed.style.backgroundColor = 'rgb(235, 12, 23)';
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+// divGreen.style.backgroundColor = 'rgb(232, 235, 209)';
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+// await Promise.race([delay(2000), domEventPromise(button, 'click')]);
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+// }
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+// }
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+
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+// trafficLight();
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+
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+
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+// Task speedtest
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+
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+const delay = ms => new Promise(ok => setTimeout(() => ok(ms), ms));
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+
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+async function speedtest(getPromise, count,parallel=1){
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+ let timedurationStart = performance.now();
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+ let arrFetch = [];
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+ for (let q = 0; q < parallel; q++) {
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+ arrFetch[q] = await getPromise();
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+ }
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+const timeBetween = performance.now();
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+ for (let i = 0; i < count; i++) {
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+ await Promise.all(arrFetch);
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+ }
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+ let timedurationEnd = performance.now();
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+ return {
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+ duration: timedurationEnd - timedurationStart,
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+ querySpeed: count / (timeBetween - timedurationStart),
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+ queryDuration: (timeBetween - timedurationStart) / count,
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+ parallelSpeed: (count * parallel)/ (timedurationEnd - timedurationStart),
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+ parallelDuration: (timedurationEnd - timedurationStart) / (count * parallel),
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+ }
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+ }
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+
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+speedtest(() => delay(1000), 10, 10 ).then(result => console.log(result))
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+speedtest(() => fetch('http://swapi.dev/api/people/1').then(res => res.json()), 10, 5).then(result => console.log(result))
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