#Google ajax feed reader code
The element specifies the error code and the element specifies the description of the error. If the loading generates an error the root element has an sub-element. One of the following values may be specified: _FORMAT (the default), _FORMAT, or _FORMAT. The callbackFunction is invoked with a argument that represents the result of the feed.
#Google ajax feed reader download
The callbackFunction is invoked when the download is complete. The Feed class methods are presented in the following table: Methodĭownloads the feed from the Google server. The Feed class methods do not have a return type. A Google Ajax Feed is represented by the class. The Google Feed API uses its own set of result elements to generate a uniform result format for an Atom 1.0 feed and an RSS 2.0 feed, which each have some elements different. The "publishedDate" element corresponds to the element in Atom and the element in RSS 2.0. The "contentSnippet" element corresponds to the snippet version of the or element in Atom 1.0 and element in RSS 2.0. Neither Atom 1.0 nor RSS 2.0 has these elements. For example, it may contain elements such as "contentSnippet" and "publishedDate". The Google Ajax Feed API generates a result document, whose structure is different from either an RSS 2.0 or the Atom 1.0 feed. However, note that an extended standard is no longer really a standard, although this one appears to be using, rather than re-inventing, the underlying RSS/Atom specs. It’s also worth noting that Microsoft has introduced the Simple Sharing Extensions (SSE), which “extend” the Atom 1.0 and RSS 2.0 specifications to provide item sharing between cross-subscribed feeds. We shall use standard Atom feeds in this article. Atom supports XML standard features such as XML Schema.Atom is being standardised by the IETF ( RFC4287), whereas RSS is not standardised.An RSS feed supports only plain text and HTML, whereas an Atom feed supports various additional content types such as XHTML, XML and binary, and references to video and audio content.
An Atom feed has 3 main advantages over the original RSS feed: Atom is not a strict superset of RSS - for a comparison between RSS 2.0 and Atom 1.0 see here. īy default, the Ajax Feed API returns the feed in JSON format.īecause of the incompatibilities between the various versions of RSS and the limitations of RSS, a new syndication specification, Atom, was introduced in 2003. Array-Ordered sequence of values, separated by a comma and enclosed in.Object-Collection of key-value pairs, separated by a comma, and enclosed in.JSON (JavaScript Object Notation) is a data interchange format used to transmit structured data and is based on the following data structures: An RSS Feed may be displayed in JSON Result Format, XML Result Format, or combined JSON/XML Result Format.
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