Asynchronous JavaScript
and XML technique is for developing interactive web using combination
of HTML, CSS and others for dynamic delivery of content to user. Double
Click for Publishers is an example which currently supports Asynchronous
JavaScript loading to make the page loading a faster process.
In
JavaScript, there are two ways to handle the HTTP requests primarily
done through browser by an user – like loading of this webpage. They may
be performed either loading synchronously or asynchronously.
Synchronous means that the rest of the page loading execution process
stops until that request has been performed. It is obvious that, this
programming is simpler to do. JavaScript do not support multiple
threading, that is the reason it needs to be loaded to full. Thus, no
other operations can be carried out while waiting for a synchronous HTTP
request. Now think that Javascript calls a server to display an Flash
based Ad (bigger size) and in HTML code the placement is hierarchically
higher than other components of the webpage to make it a viewable or
readable to the reader.
Asynchronous
JavaScript and XML (AJAX) is a kind of technology for dynamic web pages
which allows the direct exchange and the representation of parts of web
pages without the need of loading the entire web page. Ajax programs
give the impression that they are running on the user’s computer. To
avoid the problem with synchronous JavaScripts, asynchronous requests
are used. This means that JavaScript in asynchronous does not waits for
a response, but continues with the execution of the next line. In order
to process the result of the request may still is passed to the request
object also. This form is called asynchronous AJAX(Asynchronous JavaScript and XML).
No comments:
Post a Comment