AJAX (Asynchronous JavaScript and XML) is a technique used to create dynamic, fast, and interactive web applications. It allows web pages to update data asynchronously without reloading the entire page. For developers preparing for interviews, understanding AJAX is essential.
What is AJAX?
AJAX is a client-side technology that uses JavaScript to communicate with the server asynchronously.
Difference between AJAX and normal HTTP request:
AJAX updates parts of a web page without full reload, while normal requests reload the entire page.
How does AJAX work?
It uses the XMLHttpRequest object or the Fetch API to send requests and receive responses from the server in formats like JSON, XML, or HTML.
Advantages of AJAX:
Faster user experience
Reduces server load
Allows partial page updates
Common interview challenge:
Explain the difference between synchronous and asynchronous requests and how AJAX improves web performance.
Mastering these concepts can help you confidently answer AJAX-related AJAX questions in interviews and demonstrate your understanding of modern web development.
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