AJAX (Asynchronous JavaScript and XML) is used to request and update data in the background without reloading the web page.
* AJAX Overview:
* Purpose: Allows web pages to be updated asynchronously by exchanging data with a web server behind the scenes.
* Benefits: Provides a smoother user experience by avoiding full page reloads.
* Example:
* Using XMLHttpRequest:
var xhr = new XMLHttpRequest();
xhr.open("GET", "data.json", true);
xhr.onreadystatechange = function() {
if (xhr.readyState === 4 && xhr.status === 200) {
var data = JSON.parse(xhr.responseText);
console.log(data);
}
};
xhr.send();
* References:
* MDN Web Docs - AJAX
* W3Schools - AJAX Introduction