pennyspages/skins/MonoBook/resources/mobile-uls.js

/* eslint-disable no-jquery/no-global-selector */
$( function () {
	var mobileMediaQuery = window.matchMedia( 'screen and (max-width: 550px)' ),
		ULSTrigger = $( '#pt-uls' ),
		ULSMoved = false;

	function moveULS() {
		if ( ULSTrigger.length ) {
			if ( !ULSMoved && mobileMediaQuery.matches ) {
				ULSTrigger.insertBefore( $( '#pt-preferences' ) );

				ULSMoved = true;
			} else if ( ULSMoved && !mobileMediaQuery.matches ) {
				ULSTrigger.prepend( $( '#p-preferences' ) );

				ULSMoved = false;
			}
		}
	}

	$( window ).on( 'resize', moveULS );
	moveULS();
} );