MediaWiki:Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */
$.when( mw.loader.using( 'mediawiki.util' ), $.ready ).then( function () {
    var targetDate = new Date(2026, 2, 22); 
    var today = new Date();
    var timeDifference = today.getTime() - targetDate.getTime();
    var daysSince = Math.floor(timeDifference / (1000 * 60 * 60 * 24));
    var $counterItem = $( '<li>' )
        .attr( 'id', 'mw-custom-sidebar-counter' )
        .text( "Days since Mikush's Disappearance: " + daysSince );

    // Replace '#p-navigation ul' with your corrected sidebar ID if different
    $( '#p-Tools ul' ).append( $counterItem );
} );