理解Asynchronous JavaScript：使用Axios获取数据

Today's learning journey has taken me through the intricacies of using Axios, a promisted based HTTP client, for fetching data from public API using node.js. Here are the key notes for my own future reference:

A promise is essentially a place holder for an operation that hs not been completed yet, allwoing for asynchronous execution.
With Axios, I can chain up subsequent operations in .then() for successful reqeusts or handle errors in .catch(), while the rest of my code continues to run without waiting for the API response - this not only leads to a non-blocking code structure but also paves the way for more efficient and interactive web application.

Using Node's https module:

 1 import https from "https";
 2 
 3 app.get("/", (req, res) => {
 4   const options = {
 5     hostname: "bored-api.appbrewery.com",
 6     path: "/random",
 7     method: "GET",
 8   };
 9 
10   const request = https.request(options, (response) => {
11     let data = '';
12     response.on("data", (chunk) => {
13       data += chunk;
14     });
15 
16     response.on("end", () => {
17       try {
18         const result = JSON.parse(data);
19         res.render("index.ejs", {activity: data});
20       } catch (error) {
21         console.error("Failed to parse response:", error.message);
22         res.status(500).send("Failed to fetch activity. Please try again.");
23       }
24     });
25   });
26 
27   request.on("error", (error) => {
28     console.error("Failed to make request:", error.message);
29     res.status(500).send("Failed to fetch activity. Please try again.");
30   });
31 
32   request.end();
33 });

Using axios:

import axios from "axios";

app.get("/", async (req, res) => {
  try {
    const response = await axios.get("https://bored-api.appbrewery.com/random");
    res.render("index.ejs", { activity: response.data });
  } catch (error) {
    console.error("Failed to make request:", error.message);
    res.status(500).send("Failed to fetch activity.");
  }
});

Code Source: Udemy - The Complete 2023 Web Development Bootcamp by Angela Yu