AJAX and Fetch

AJAX (Asynchronous JavaScript and XML) and Fetch are techniques used to make API calls and retrieve data from a server without refreshing the entire web page.

AJAX allows you to send requests to a server in the background and update only specific parts of the web page with the returned data. This can improve the user experience by making web pages more responsive.

Fetch is a modern JavaScript API that provides an easy-to-use interface for making HTTP requests. It replaces the older XMLHttpRequest object, offering a simpler and more flexible way to handle asynchronous requests.

Here's an example of using Fetch to make an AJAX request and retrieve JSON data from an API:

1// Replace with actual code related to AJAX and Fetch
2
3fetch('https://api.example.com/data')
4  .then(response => response.json())
5  .then(data => {
6    console.log(data);
7  })
8  .catch(error => {
9    console.error(error);
10  });

In this example, we use the fetch function to send a GET request to the specified URL. We then handle the response by converting it to JSON using the json method and log the data to the console.

By learning AJAX and Fetch, you gain the ability to fetch data from APIs, send data to servers, and update the web page dynamically based on the server's response. This is crucial for building interactive web applications and integrating with external services and APIs.

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// AJAX and Fetch basics

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// Replace with actual code related to AJAX and Fetch

​

fetch('https://api.example.com/data')

  .then(response => response.json())

  .then(data => {

    console.log(data);

  })

  .catch(error => {

    console.error(error);

  });