In which version of MediaWiki came the feature 'page preview'? - mediawiki

We've MediaWiki 1.31.0 installed, but can't find the feature 'page preview', which is described here: https://www.mediawiki.org/wiki/Page_Previews
On this feature-page there's no hint, in which version of MediaWiki this feature was implemented. Can anybody tell me?

This is not core Mediawiki functionality, but implemented via an extension. See here for more information: https://www.mediawiki.org/wiki/Extension:Popups
PS: 1.31.0 has known security issues, you should at least upgrade to 1.31.7

Related

How to develop Chrome/Firefox Plugin (no Extensions ! no npapi!)

With the deprecation of NPAPI, how to develop a Chrome/Firefox plugin insteadof npapi plugin in windows?
i find the below results:
use pppai or nacl/pnacl from bellow link:
https://developer.chrome.com/native-client/sdk/download
but I find the notes:
Deprecation of the technologies described here has been announced for platforms other than ChromeOS.
Please visit our migration guide for details.
So how to use it and make chrome/firefox plugin that can be auto-load??
Thanks by advance and sorry for my poor English ( ask me if you don't really understand my answer )

Upgrade Semantic Bundle/SMW 1.9 to SMW 2.2

We're upgrading from Semantic MediaWiki 1.9.2 to version 2.2 and will no longer use the Semantic Bundle.
So we no longer include SemanticBundleSettings.php and SemanticBundle.php in LocalSettings.php but use Composer and the vendor/autoload.php.
The Special:Version page shows the correct version and most things seem to work well but there are some issues.
For example when editing a template this message appears: "This page is not enabled for semantic in-text annotations due to namespace restrictions. Details about how to enable the namespace is described on the configuration help page".
(assuming this has something to do with upgrading)
My question: is there some roadmap to upgrade in a structured way rather then trial-and-error?
I've read Upgrade from SMW 1.9+ for MW 1.22+ and the release notes for SMW 2.0 but this does not give me enough information.

Semantic MediaWiki 2.2: which extensions versions to use?

I am busy upgrading SMW 1.9.2 to version 2.2. How do I know which version to use of the accompanying extensions like Semantic Forms or Semantic Extra Special Properties?
As you can see at the SMW docs:
Various MediaWiki extensions are available for further extending
Semantic MediaWiki with additional functionality, and some basic
extensions of MediaWiki are generally useful for employing SMW.
Most extensions are not maintained by the SMW Project. Please see the
extension's main page and installation files to find out whom to
contact for support and where to report bugs. Questions related to
these extensions can be discussed on the mailing list or forum for the
extension (where specified), or on the Semantic MediaWiki user mailing
list.
So, in case that you don't find the relation between your SMW version and the version of each extension in the Semantic MediaWiki user mailing list or the forum for the extension, you should look at the official docs for every extension or contact the developers of each extension, as there is not official reference about the relation you're looking for.

Does $wgSpamRegex require any Extensions?

Does $wgSpamRegex require any Extensions in MediaWiki version 1.23.5 for it to work?
On the one hand, that page in the Manual says it's "built in" to MediaWiki, but then someone on the Talk page mentioned it's not working and another user recommended installing the SpamRegex Extension, which is obsolete but solved that users problem.
So which is it?
The manual seems up to date. $wgSpamRegex is a core function, and does not require any additional extensions.
(The discussion you are referring to is from 2008, and the MW version mentioned there is 1.13.)
The information on the Manual page is correct. $wgSpamRegex is a built-in configuration variable and can be used without any extensions :)

Difference between Gecko Plug-in API and NPAPI

Can anyone tell me the difference between Gecko API Plugin development and NPAPI plugin development ?
And can anyone provide me with startup document on NPAPI plugin ?
Thanks in advance,
Akshay Sahu.
NPAPI is the plug-in API supported by Gecko, so there is no difference.
As for getting started, search this site for "NPAPI example" or "NPAPI documentation" and you'll get plenty of previous answers to that exact question.