Sistemas y Tecnologías Web: Servidor

Master de II. ULL. 1er cuatrimestre


Organization ULL-MII-SYTWS-2122   Classroom ULL-MII-SYTWS-2122   Campus Virtual SYTWS   Chat Chat   Profesor Casiano

Table of Contents

Solución

Solución

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <p id="out"></p>
  <script>
    'use strict';
    let script = document.createElement('script');
    document.head.append(script); 
    let out = document.getElementById('out');

    function loadScript(src) {
      return new Promise(function(resolve, reject) {  
        script.src = src;
        script.onload = (e) => resolve(script);
        script.onerror = (Err) => reject(new Error(`Script load error for ${src}`));     
        
      });
    }
    
    
    let promise = loadScript("https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.js");
    
    promise.then(
      script => {  
        out.innerHTML = `<br/>Promise solved: script ${script.src} is loaded!`;
        console.log(_.chunk(['a', 'b', 'c', 'd'], 2));
      }
    ).catch(
      error => {
         out.innerHTML += `<br/>Promise rejected: Error!<br/> Error Message: ${error.message}`
      });
    
    promise.then(script => {
      out.innerHTML += '<br/>Another handler for the same promise ... '
      console.log(_.times(3, String)); // => ['0', '1', '2']
     }).catch(
      error => {
         out.innerHTML += `<br/>Another Handler!<br/>Promise rejected: Error!<br/> Error Message: ${error.message}`
      }
    );
    </script>
    
</body>
</html>

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