Ajax interview questions and Answers
Asynchronous JavaScript and XML is a new age and advanced set of development techniques popular among developers for building websites and web applications faster better and more interactive. It uses XML, CSS, HTML and JavaScript. The core function of AJAX is to update web content asynchronously, which means a user’s web browser doesn’t require to reload an entire web page when only a small portion of page content needs to be changed. It’s neither a tool nor a programming language; AJAX is a concept, a client-side script that communicates to and from a database/server without require of a complete page refresh or a Postback. The demand for AJAX is quite popular among businesses due to its versatility. We will discuss a set of most asked AJAX interview questions relevant to them further here.
Most Frequently Asked Ajax interview questions
In AJAX, the XMLHttpRequest (XHR) is an API that can be used by JScript, JavaScript, VB Script and other available web browser scripting languages to manipulate and transfer XML data from and to a web server using HTTP, bridging an independent connection channel between a webpage’s server side and client side.
Know the basics of AJAX with these specially curated AJAX interview questions and answers.
To know the status of an AJAX request, developers use ready State. It allows users to determine the request status. It the value comes 4, then the application has been completed, and the response is sent to the browser.
AJAX has few limitations for its users. Here are a few of them:-
- Can’t use forward and back buttons to navigate between various page states.
- Users can’t bookmark specific state here.
- Major search engines don’t index data loaded through AJAX.
- Users without JavaScript support or disabled JavaScript won’t be able to use the functionality that developers provide through AJAX.
Advantages
- Excellently reduces the server traffic for both side requests which results in enhanced side response speed.
- Improved user experience and better user productivity.
- Decreased bandwidth usage and increased performance speed.
- Better language compatibility and supports asynchronous processing
- Fewer server hits and network load
- Easier navigation and form validation.
Now let’s discuss a list of compiled AJAX interview questions and best possible answers for them for your acknowledgment. These interview questions are best suitable for both fresher and experienced candidates.