Promises

volver a M06 Desarrollo web en entorno cliente

Exercises

1. With the given code, create a web page that call a server with some data (it's doesn't matter what data) and print the data on the page applying some kind of format.

   const loadJSON = (file) => {
     return new Promise((resolve, reject) => {
       const xhr = new XMLHttpRequest();
       xhr.open('GET', file, true);
       xhr.responseType = 'json';
       xhr.onload = () => {
         if (xhr.status === 200) {
           resolve(xhr.response);
         } else {
           reject(xhr.statusText);
         }
       };
       xhr.onerror = () => reject(xhr.statusText);
       xhr.send();
     });
   };