wikimedia/mediawiki-core

/*!
 * JavaScript for Special:Watchlist
 */
( function () {
    $( function () {
        $( '.mw-changeslist-line-watched .mw-title a' ).on( 'click', function () {
            $( this )
                .closest( '.mw-changeslist-line-watched' )
                .removeClass( 'mw-changeslist-line-watched' )
                .addClass( 'mw-changeslist-line-not-watched' );
        } );
    } );
}() );