homeworks/13/script.js

//fetch basic / fetch improved
function fetchBasic(element, jsonStr) {
    let table = document.createElement('table');
    table.style.fontFamily = 'sans-serif';

    for (const key in jsonStr) {
        let tr = document.createElement('tr');
        let tdKey = document.createElement('th');
        let tdValue = document.createElement('td');

        tdKey.textContent = key;
        if(typeof jsonStr[key] === 'string' && jsonStr[key].includes('https://swapi.dev/api/')) {
            let button = document.createElement('button');
            button.textContent = jsonStr[key];

            button.onclick = () => {
                fetch(jsonStr[key])
                    .then(res => res.json())
                    .then(luke => fetchBasic(tdValue, luke));
            }

            button.style.border = 'transparent';
            button.style.backgroundColor = 'transparent';
            button.style.fontSize = '16px'
            button.style.padding = '0'
            button.style.cursor = 'pointer'
            tdValue.append(button);
        }
        else if(Array.isArray(jsonStr[key])) {
            jsonStr[key].forEach((item) =>{
                if (typeof item === 'string' && item.includes('https://swapi.dev/api/')){
                    let button = document.createElement('button');
                    button.textContent = item;

                    button.onclick = () => {
                        fetch(item)
                            .then(res => res.json())
                            .then(luke => fetchBasic(tdValue, luke));
                    }

                    button.style.border = 'transparent';
                    button.style.backgroundColor = 'transparent';
                    button.style.fontSize = '16px'
                    button.style.padding = '0'
                    button.style.cursor = 'pointer'
                    tdValue.append(button);
                }
                else {
                    tdValue.append = item
                }
            })
        }
        else if(typeof jsonStr[key] === 'object' && jsonStr[key] !== null){
            for (const key in jsonStr[key]) {
                let obj = document.createElement('p');
                obj.textContent = `${key}: ${jsonStr[key]}`;
                tdValue.append(obj)
            }
        }
        else{
            tdValue.textContent = jsonStr[key];
        }

        tr.append(tdKey);
        tr.append(tdValue);
        table.append(tr);

        for (let cell of tr.cells) {
            cell.style.border = '2px solid #000';
            cell.style.padding = '10px';
            cell.style.textAlign = 'left';
            cell.classList.add('td');
        }
    }
    element.append(table);
}
fetch('https://swapi.dev/api/people/1/')
    .then(res => res.json())
    .then(luke => fetchBasic(containerForm, luke));

//myfetch
function myfetch(url){
    return new Promise(function (resolve, reject){
        let xhr = new XMLHttpRequest();
        xhr.open("GET", url, true);
        xhr.send();
        xhr.onload = () => xhr.status !== 200 ? reject() : resolve(JSON.parse(xhr.responseText));
        xhr.onerror = () => reject();
    })
}
myfetch('https://swapi.dev/api/people/1/')
    .then(luke => console.log(luke), () => console.log('Error:'))

//race
const delay = ms => new Promise(ok => setTimeout(() => ok(ms), ms));
Promise.race([myfetch('https://swapi.dev/api/people/1/'), delay(2080)])
    .then(value => console.log(value), () => console.log('Error'));