What is AJAX and how it works
AJAX (Asynchronous JavaScript and XML) is used as a web development technique used in web development used with PHP. AJAX helps in dynamic, interactive, and immediate web response web development web design processing creation. Which allows the web developer or client to load and manually customize and update any webpages and websites asynchronously without reloading the entire page in the client web browser. Currently AJAX helps web developers to develop advanced webpages, dynamic, interactive, and intuitive fast web applications and preview them in an immediate time by reducing the server load.
Key Concepts of AJAX Programming.
- Asynchronous – Ajax web development script allows the web browser to request data from the server and update some particular portion of the webpage without refreshing the entire webpage. This makes the internet user experience faster and more responsive and smooth.
- JavaScript – Ajax web development script relies heavily on JavaScript to send and receive requests from the server.
- XML – In earlier times, the data format used for Ajax web development script web requests and web responses was XML. But in present times it has become more preferable or simpler to use JSON due to its simplicity and compatibility with Ajax development script JavaScript.
How AJAX programming works.
- User interaction – When an online internet user interacts with a webpage. For example, webpage elements are accessed and controlled by clicking on an online website or webpage button or submitting a form.
- AJAX request – An Ajax request makes an asynchronous request to a JavaScript web server. The request is usually made using the XMLHttpRequest object or the more modern fetch() API.
- Server response – The Ajax server processes the response, and sends the online client request. Which can be in the form of webpage data such as JSON, XML or HTML web development scripts.
- Update webpage – The Ajax web browser receives the response from the server, and the JavaScript in the existing webpage dynamically customizes and updates only some relevant portion of the webpage without reloading the entire webpage. For example, creating and updating a button, multimedia object, table in a webpage, fastly displaying new webpage text and visual content, etc.
Benefits of AJAX development scripts.
- Faster user experience – Ajax is considered very reliable in web development. Because only some portions of any web page are updated in Ajax. So it reduces data transfer in the client web browser, and makes the webpage preview faster in the web browser.
- Reduced server load – Only the necessary website webpage data information is requested in any webpage with Ajax. Which can reduce web server traffic in server rush time, and improves webpage website preview efficiency.
- Interactive pages – Ajax web development scripts are often used to search online live data and information, online form validation, create interactive webpage features like auto-data information refreshing data, etc.
Example of AJAX development script.
// it Send an AJAX request to the server
fetch(‘https://domainname.com/data’)
.then(response => response.json()) // it Parse the JSON response
.then(data => {
// it Use the data to update part of the web page
document.getElementById(“content”).innerHTML = data.content;
})
.catch(error => console.log(‘Error:’, error));
The above code sends an online request to https://domainname.com/data. It retrieves data and information in JSON format, and immediately updates the HTML webpage element with id=”content” without reloading the webpage in the current web browser.
