Week Thirteen (MGDP2060)

This article lists topics for Week Thirteen of Web Design and Development III (MGDP2060).

Previous: Week Twelve (MGDP2060) - Next: Week Fourteen (MGDP2060)

Ajax

Ajax is a programming paradigm, widely used in web design and development.

Ajax is a number of things, the most important being the fact that JavaScript can:

• Send requests from a browser
• Receive responses from the server
• Update the browser's Document Object Model -- in other words, what the user sees (or hears) in the browser.

XML

Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format which is both human-readable and machine-readable.

It is used for many purposes, including RSS.

JSON

JSON is a file format for text data, widely used in web applications.

JSON is an alternative to XML.

Document Object Model

In a web browser, the Document Object Model (DOM) represents the HTML, CSS, and other parts of a web page.

Web service

A web service is a method of communication between two electronic devices over a computer network.

It is a software function provided at a network address over the World Wide Web, with the service always on, as in the concept of utility computing.

Web feed

On the World Wide Web, a web feed (news feed, syndicated feed, etc.) is a data format used for providing users with frequently updated content.

RSS

RSS (Rich Site Summary); originally RDF Site Summary; often called Really Simple Syndication, uses a family of standard web feed formats to publish frequently updated information.

Cross-origin resource sharing (CORS)

Cross-origin resource sharing (CORS) is a mechanism that allows restricted resources (e.g. fonts, JavaScript, etc.) on a web page to be requested from another domain outside the domain from which the resource originated.

WordPress to override CORS

Add this code to functions.php:

add_action( 'pre_get_posts', 'add_header_origin' );

function add_header_origin() {
    if (is_feed()){
        header( 'Access-Control-Allow-Origin: *' );
    }
}  

WordPress RSS2 feed for specific category

RSS feed URL for category 7 ("Chairs"):

http://mgdp2060.x10host.com/?feed=rss2&cat=y

Resolves to:

http://mgdp2060.x10host.com/category/chairs/feed/

Exercises

See Week Thirteen Exercises (MGDP2060).