// set the message string...
     'foundResults' => 'You found [$3 {{PLURAL:$1|one file|$1 files}}] in [$4 {{PLURAL:$2|one directory|$2 directories}}].'

     // later, create some complex behaviour out of a message string and put it on the page...

     var filesJqueryLink = $('a').click( function() { alert( "you clicked on this!" ) }; );
     var directoryLinkUrl = 'http://something/directories=' + directories;

     $('#result').msg( 'foundResults', numFiles, numDirectories, filesJqueryLink, directoryLinkUrl );

    // create an <A> which, when clicked, pops up an alert.

    var link = $('<a></a>').click( function(){ alert("you clicked on this link"); } );

    // find a paragraph on the page, and fill it with a particular MediaWiki string which has a link in
    // it, and then apply the above link's behavior to that link!
    // Imagine that "myMessageThatHasALink" looks like "This message has [$1 a link]."

    $('#someId').msg( 'myMessageThatHasALink', link );

    // Result: HTML that behaves as if you wrote this
    //  'This message has <a href="#" onClick='alert("you clicked on this link")'>a link</a>.'