Homework & Coding Practice

Homework/Practice Coding Assignment (20-min)

Step-by-Step Procedure

1. Write a Node.js Script Using async/await to Fetch Data from a Public API:

   • Use a public API, such as the JSONPlaceholder API: https://jsonplaceholder.typicode.com/posts.

   • Create a file named asyncAwaitExample.js:

     javascript코드 복사const fetch = require('node-fetch');
     
     const fetchData = async () => {
       try {
         const response = await fetch('https://jsonplaceholder.typicode.com/posts');
         if (!response.ok) {
           throw new Error(`HTTP error! Status: ${response.status}`);
         }
         const data = await response.json();
         console.log('First post:', data[0]);
       } catch (err) {
         console.error('Error fetching data:', err.message);
       }
     };
     
     fetchData();

   • Steps:

     1. Install node-fetch if not already installed:

        bash코드 복사npm install node-fetch

     2. Run the script:

        bash코드 복사node asyncAwaitExample.js

   • Expected Output:

     • Logs the first post from the API.

2. Identify and Handle Potential Errors:

   • Modify the script to:

     • Check for invalid URLs.

     • Handle unexpected API response formats.

   • Example Error Handling:

     javascript코드 복사const fetchData = async () => {
       try {
         const response = await fetch('https://jsonplaceholder.typicode.com/invalid');
         if (!response.ok) {
           throw new Error(`HTTP error! Status: ${response.status}`);
         }
         const data = await response.json();
         console.log(data);
       } catch (err) {
         console.error('Error:', err.message);
       }
     };
     
     fetchData();

3. Test the Script:

   • Run it with valid and invalid URLs to observe the error-handling behavior.