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DHTML, Ajax, Jason

DHTML, or Dynamic Hypertext Markup Language, combines HTML, CSS, and JavaScript to create interactive web pages that can change based on user input. AJAX, which stands for Asynchronous JavaScript And XML, enables web pages to update asynchronously without reloading, using XMLHttpRequest to communicate with servers. JSON, or JavaScript Object Notation, is a lightweight, human-readable data interchange format that supports various data structures and is language independent.

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Azharr Nawaz
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13 views3 pages

DHTML, Ajax, Jason

DHTML, or Dynamic Hypertext Markup Language, combines HTML, CSS, and JavaScript to create interactive web pages that can change based on user input. AJAX, which stands for Asynchronous JavaScript And XML, enables web pages to update asynchronously without reloading, using XMLHttpRequest to communicate with servers. JSON, or JavaScript Object Notation, is a lightweight, human-readable data interchange format that supports various data structures and is language independent.

Uploaded by

Azharr Nawaz
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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What is DHTML?

DHTML stands for Dynamic Hypertext Markup Language. DHTML combines


HTML, CSS, and JavaScript to create interactive and dynamic web pages. It
allows for customization and changes to the content based on user inputs.
Earlier, HTML was used to create static pages that only defined the structure of
the content.

What is AJAX?
AJAX = Asynchronous JavaScript And XML.

AJAX is not a programming language.

AJAX just uses a combination of:

 A browser built-in XMLHttpRequest object (to request data from a web


server)
 JavaScript and HTML DOM (to display or use the data)

AJAX is a misleading name. AJAX applications might use XML to transport data,
but it is equally common to transport data as plain text or JSON text.

AJAX allows web pages to be updated asynchronously by exchanging data with a


web server behind the scenes. This means that it is possible to update parts of a
web page, without reloading the whole page.
How AJAX Works

 1. An event occurs in a web page (the page is loaded, a button is clicked)


 2. An XMLHttpRequest object is created by JavaScript
 3. The XMLHttpRequest object sends a request to a web server
 4. The server processes the request
 5. The server sends a response back to the web page
 6. The response is read by JavaScript
 7. Proper action (like page update) is performed by JavaScript

What is JSON
JSON is an acronym for JavaScript Object Notation, is an open standard format,
which is lightweight and text-based, designed explicitly for human-readable data
interchange.

o JSON stands for JavaScript Object Notation.

o JSON is an open standard data-interchange format.

o JSON is lightweight and self-describing.

o JSON originated from JavaScript.

o JSON is easy to read and write.

o JSON is language independent.


o JSON supports data structures such as arrays and objects.

Features of JSON
o Simplicity

o Openness

o Self-Describing

o Internationalization

o Extensibility

o Interoperability

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