Working example which replaces edit box contents with 'NEWCODE'. This is a DOM operation.

---- var stuff = { doStuff : function() { $('#wpTextbox1').val('NEWCODE'); } };

$(document).ready( function() { mw.loader.using( [], stuff.doStuff ); } ); ----

On Wed, 3 Sep 2014, at 22:46, Myname To wrote:

hello, can you please help me with this:

I recently installed mediawiki on Centos6.5 and after following the instructions for adding HTML and JS to wikipages: http://www.mediawiki.org/wiki/Adding_HTML_to_wiki_pages (the page was last modified on 22 August 2014, at 21:10.)

I can't use no simple javascript with wikimedia ...

First I checked in LocalSettings.php:

$wgUseSiteJs = true; $wgAllowUserJs = true; $wgAllowUserCss = true;

My Mediawiki is completely empty so I put Inside MediaWiki:YourScript.js nothing else than:

var helloWorld = document.getElementById('helloWorldID'); newPageElement.innerHTML = '<script type="text/javascript"> document.write('<b>Hello World</b>'); </script>';

also in MediaWiki:Common.js I have just one single code:

importScript('MediaWiki:YourScript.js');

and for the Template:helloWorld I did only that:

<div id="helloWorldID"></div>

and in MediaWiki:YourScript it stand one word: {{helloWorld}}

... nothing happens (also after refresh, shift f5 etc.) _______________________________________________ MediaWiki-l mailing list To unsubscribe, go to: https://lists.wikimedia.org/mailman/listinfo/mediawiki-l

This not working has nothing to do with the MediaWiki software. It looks like you have a thing or to learn about javascript and programming in general. Here's a few tips. Your script has various issues that contradict how javascript works.

If you'd run this on a regular web page without MediaWiki, Common.js, importScript, Templates,etc. it will also not work.

1) Can't have multi line string literals in javascript.

If you look at the browser console[1], you'll probably see a SyntaxError due to an illegal token in the script. To have multiple lines you need a \n character or escape the literal line break with a slash.

var foo = 'line 1\nline 2'; var bar = 'line A\ line B';

2) Quotes need escaping.

In your snippet the single quote before the "<b>"-tag stops the inner html string and then runs the < character as part of javascript syntax which doesn't work.

3) Unknown variable 'newPageElement'.

I think you meant helloWorld. This also generated an error that you could detect yourself via the console [1].

4) JavaScript inside script tags is not evaluated in dynamically parsed HTML.

To execute javascript in javascript, write is as regular javascript. Not as javascript in a script tag in html in javascript.

The innerHTML feature can parse and create elements, and it will also create a script element. But it will not execute the actual code because it has no runtime context. e.g. document.write doesn't work because the document has already been parsed.

5) To create and render new elements, use the DOM interface.

document.createElement [2] Node.appendChild [3]

For example:

var helloWorldElement = document.getElementById('helloWorldID'); var msgElement = document.createElement('b'); var msgText = document.createTextNode('Hello world');

msgElement.appendChild(msgText); helloWorldElement.appendChild(msgElement);

See also http://jsfiddle.net/7f9uko44/

Again, this is not related to MediaWiki. This is how web browsers, javascript and HTML work in general.

-- Krinkle

[1] https://developer.chrome.com/devtools/index https://developer.chrome.com/devtools/docs/console [2] https://developer.mozilla.org/en-US/docs/Web/API/document.createElement [3] https://developer.mozilla.org/en-US/docs/Web/API/Node.appendChild

On 3 Sep 2014, at 14:46, Myname To mailusenet@yahoo.de wrote:

MediaWiki:YourScript.js nothing else than:

var helloWorld = document.getElementById('helloWorldID'); newPageElement.innerHTML = '<script type="text/javascript"> document.write('<b>Hello World</b>'); </script>';

also in MediaWiki:Common.js I have just one single code:

importScript('MediaWiki:YourScript.js');

and for the Template:helloWorld I did only that:

<div id="helloWorldID"></div>

and in MediaWiki:YourScript it stand one word: {{helloWorld}}

... nothing happens (also after refresh, shift f5 etc.)