feat: exercice creating and queuing Promises

This commit is contained in:
Laurent Drogou
2022-03-29 17:07:13 +02:00
parent 3cb77be647
commit 71aaa607b9

View File

@@ -1,21 +1,104 @@
import setText, { appendText } from "./results.mjs";
export function timeout() {
const wait = new Promise((resolve) => {
setTimeout(() => {
resolve("Timeout !");
}, 1500)
});
wait.then(text => setText(text))
}
export function interval() {
let counter = 0;
const wait = new Promise((resolve) => {
setInterval(() => {
console.log(`Counter ${++counter}`);
resolve(`Counter ${counter}`);
}, 1500)
});
wait
.then(text => setText(text))
.finally(() => appendText(`-- DONE COUNTER ${counter}`));
}
export function clearIntervalChain() {
let counter = 0;
let interval;
const wait = new Promise((resolve) => {
interval = setInterval(() => {
console.log(`Counter ${++counter}`);
resolve(`Counter ${counter}`);
}, 1500)
});
wait
.then(text => setText(text))
.finally(() => clearInterval(interval));
}
export function xhr() {
let request = new Promise((resolve, reject) => {
let oReq = new XMLHttpRequest();
oReq.open("GET", "http://localhost:3000/users/7");
oReq.onload = () => {
if (oReq.status === 200) {
resolve(oReq.responseText);
} else {
reject(oReq.statusText + " " + oReq.status);
}
}
oReq.onerror = () => reject("Request Failed !")
oReq.send();
});
request.then(result => setText(result))
.catch(reason => setText(reason));
}
export function allPromises() {
let categories = axios.get("http://localhost:3000/itemCategories");
let statuses = axios.get("http://localhost:3000/orderStatuses");
let userTypes = axios.get("http://localhost:3000/userTypes");
let addressType = axios.get("http://localhost:3000/addressTypes");
Promise.all([categories, statuses, userTypes, addressType])
.then(([cat, stat, type, addr]) => {
setText("");
appendText(JSON.stringify(cat.data));
appendText(JSON.stringify(stat.data));
appendText(JSON.stringify(type.data));
appendText(JSON.appendText(addr.data));
})
.catch(reasons => setText(reasons));
}
export function allSettled() {
let categories = axios.get("http://localhost:3000/itemCategories");
let statuses = axios.get("http://localhost:3000/orderStatuses");
let userTypes = axios.get("http://localhost:3000/userTypes");
let addressType = axios.get("http://localhost:3000/addressTypes");
Promise.allSettled([categories, statuses, userTypes, addressType])
.then((values) => {
let results = values.map(v => {
if (v.status === 'fulfilled'){
return `FULLFILLED ${JSON.stringify(v.value.data[0])} `;
}
return `REJECTED : ${v.reason.message} `;
});
setText(results)
})
.catch(toto => setText(toto));
}
export function race() {