jupiter-web-exercises/promises-lecture.html at master · CodeupClassroom/jupiter-web-exercises · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Promises Lecture</title>
</head>
<body>
    <main>
        <h1>Intro to JavaScript Promises</h1>

        <h3>Articles relevant to the local weather conditions...</h3>
        <div id="articles"></div>

    </main>
<script src="js/keys.js"></script>
<script
        src="https://code.jquery.com/jquery-3.4.0.min.js"
        integrity="sha256-BJeo0qm959uMBGb65z40ejJYGSgR7REI4+CW1fNKwOg="
        crossorigin="anonymous"></script>
<script>

"use strict";

// ====================================================================================
// ==================================== PROMISES ======================================
// ====================================================================================

/*
    A promise is a wrapper for asynchronous data/actions.

    Promises make writing asynchronous JS code cleaner (avoiding "callback hell" nesting).

    Working with jQuery AJAX requests (jqXhr) is very similar to promises
    (can even use promises in later version of jQuery!).

    Promises have now become VERY common in both client and server side JS.

    You will very likely handle promises far more often than having to create them.
*/


// ============ Basic Example of Promise Creation and Handling
//
// let goodKid = false;
//
// // a promise is made to do something
// const getCake = new Promise((resolve, reject) => {
//     if (goodKid) {
//         resolve("Here is some cake");
//     } else {
//         reject("Bad. No cake. :(");
//     }
// });
//
// console.log(getCake); // promise object
//
// // once the promise is resolved or rejected, take additional action
//
// getCake.then(data => {
//     console.log(data);
// }).catch(error => {
//     console.log(error);
// });


// ============ Using Promises with jQuery version 3+

    // jQuery AJAX methods
    //     $.ajax('https://swapi.dev/api/people/1')
    //         .done(function(data) {
    //             console.log(data);
    //         })
    //         .fail(function(jqXHR, message) {
    //             console.log(message);
    //         });

    // Using promise methods (jQuery version 3.x.x and after)
    //     $.ajax('https://swapi.dev/api/people/1')
    //         .then(function(data) {
    //             console.log(data);
    //         })
    //         .catch(function(jqXHR, message) {
    //             console.log(message);
    //         });


// ====================================== FETCH API


// ============ Fetch API

// jQuery AJAX request example
// $.ajax('https://swapi.dev/api/people/1')
//     .done(function(data) {
//         console.log(data.name);
//     })
//     .fail(function(jqXHR, message) {
//         console.log(message);
//     });


// fetch('https://swapi.dev/api/people/1').then(response => {
//     return response.json();
// }).then(data => {
//     console.log(data.name);
// }).catch(err => {
//     console.log(err);
// });


// fetch('https://swapi.dev/api/people/1')
//     .then(response => response.json())
//     .then(console.log)
//     .catch(console.log);


// Fetch API POST example

    // fetch('https://hookb.in/K3RyG3md1lH0zzW3VPMq', {
    //     method: 'POST',
    //     headers: {
    //         'Content-Type': 'application/json'
    //     },
    //     body: JSON.stringify({
    //         username: "bill",
    //         password: "pass123"
    //     })
    // })
    //     .then(res => res.json())
    //     .then(console.log)
    //     .catch(console.log);


// ============ Promise Chaining

// function countSlow(count) {
//     return new Promise(function(res) {
//         setTimeout(function() {
//             console.log(count);
//             res(++count);
//         }, 500);
//     });
// }
//
// countSlow(1)
//     .then(countSlow)
//     .then(countSlow)
//     .then(countSlow)
//     .then(countSlow);


//  ============ NY Times Articles Based on Forecast of Current Location

    // function getForecast(coord) {
    //     return fetch(`https://cors-anywhere.herokuapp.com/https://api.darksky.net/forecast/${darkSkyAPI}/${coord.lat},${coord.lng}`)
    //         .then(res => res.json())
    // }
    //
    //
    // function getCurrentLocation() {
    //     return new Promise(function(res, rej) {
    //         navigator.geolocation.getCurrentPosition(function(pos) {
    //             res({"lat": pos.coords.latitude, "lng": pos.coords.longitude});
    //         });
    //     });
    // }
    //
    // function getLocalForecast() {
    //     return getCurrentLocation()
    //         .then(getForecast)
    // }
    //
    // function getNYTimesArticle(search) {
    //     const apiKey = apiKeyNYT;
    //     return fetch(`https://api.nytimes.com/svc/search/v2/articlesearch.json?q=${search}&api-key=${apiKey}`)
    //         .then(res => res.json());
    // }
    //
    // function buildWeatherHtml(articles) {
    //     return articles.reduce((accum, curr) => {
    //         return accum + `
    //             <article>
    //                 <a href="${curr.web_url}">${curr.headline.main}</a>
    //             </article>
    //         `;
    //     }, "");
    // }
    //
    // getLocalForecast()
    //     .then(forecast => forecast.currently.summary)
    //     .then(getNYTimesArticle)
    //     .then(data => {
    //         document.getElementById("articles").innerHTML = buildWeatherHtml(data.response.docs);
    //     });


// ====================================== ADDITIONAL TOPICS


// ============ Promise.resolve() and Promise.reject()

// Promise.resolve('one').then((one) => {
//     console.log(one);
//     return 'two';
// }).then((two) => {
//     console.log(two);
//     return 'three';
// }).then((three) => {
//     console.log(three);
// });


// ============ Promise.all()

    // const getCoffee = (type) => {
    //     return processOrder(type);
    // };
    //
    // const processOrder = (type) => {
    //
    //     let orderAndPay = new Promise((resolve, reject) => {
    //         setTimeout(function() {
    //             resolve(`Coffee of type ${type} has been ordered and paid for!`);
    //         }, 4000);
    //     });
    //
    //     let makeOrder = new Promise((resolve, reject) => {
    //         setTimeout(function() {
    //             resolve(`Coffee of type ${type} is ready!`);
    //         }, 2000);
    //     });
    //
    //     return Promise.all([orderAndPay, makeOrder]);
    //
    // };
    //
    // getCoffee("espresso").then((data) => {
    //     console.log(data[0]);
    //     console.log(data[1]);
    //     console.log("You now have a coffee!");
    // }).catch((err) => {
    //     console.log(err)
    // });


// ============ Promise.race()

    // const color1Promise = new Promise((res) => {
    //     setTimeout(res, 2000, fetch('./data/color.json'));
    // });
    //
    // const color2Promise = new Promise((res) => {
    //     setTimeout(res, 1000, fetch('./data/color2.json'));
    // });
    //
    // const getColor = () => Promise.race([color1Promise, color2Promise]);
    //
    // getColor().then(response => response.json()).then(data => console.log(data));


fetch('https://api.github.com/events', {headers: {'Authorization': 'token ' + gitHubToken}})
    .then(res => res.json())
    .then(console.log)
    .catch(console.error);


</script>

</body>
</html>