MediaWiki:Vector-2022.js

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document.addEventListener( 'DOMContentLoaded', function () {
    document.querySelectorAll( '.mw-portlet' ).forEach( function ( portlet ) {
        var label = portlet.querySelector( '.mw-portlet-label' );
        if ( !label ) return;

        label.addEventListener( 'click', function () {
            portlet.classList.toggle( 'tl-collapsed' );
        } );
    } );
} );