Common.js

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/* Any JavaScript here will be loaded for all users on every page load. */

/* Navigation Popups */
/* Currently Disabled
mw.loader.load('/load.php?modules=ext.gadget.Navigation_popups');
window.popupAdminLinks = false;
window.popupActionsMenu = false;
window.popupStructure = 'lite';
window.popupSubpopups = false;
window.popupSummaryData = false;
*/

$(document).ready(function() {
	var pagename = mw.config.get('wgPageName'),
		namespace = mw.config.get('wgNamespaceNumber');
	// var indicator = document.querySelectorAll(".mw-indicators");
	// var indicator1 = indicator[0];
	
	// if (indicator1.childNodes.length !== 1) {document.getElementById("tagline").innerHTML = indicator1.innerHTML;}
	
	/*== Hides the actions button and indicators while in the Visual editor ==*/
	
	mw.hook( 've.activationComplete' ).add( function () {
		$('.content .top').hide();
	});
	
	mw.hook( 've.deactivationComplete' ).add( function () {
			$('.content .top').show();
	});
	
	/*== Dogcraft.net topbar: Automatically enabled to display the Dogcraft.net topbar on the Help Resources(WIP) and Rules pages. (moved from gadget) ==*/
	$(document).ready(function() {
		if (mw.config.get('wgPageName') === "Rules" || mw.config.get('wgPageName') === "Help_Resources")
		{
			$('.nav .nav-title a span').text('Dogcraft');
			$('#wikiNav').removeClass('expanded');
		}
	});
	
	/*== Shows edit button on Rules and Help Resources for those who can edit it ==*/
	if (pagename === 'Rules' || pagename === 'Help_Resources') {
		if (mw.config.get('wgIsProbablyEditable')) {
			$('#wikiActions').show();
		}
	}
	
	/*= Top header banner =*/
	if (namespace === 14) {
		var headbanner = document.getElementById("headbanner");
		if (headbanner) {
			var firstHeading = document.getElementById("firstHeading");
			if (headbanner.hasAttribute("title")) { firstHeading.style.setProperty('--banner-padding', headbanner.title); }
			firstHeading.style.setProperty('--banner-image', 'url(' + headbanner.textContent + ')');
			firstHeading.classList.add('banner');
			$("#siteSub").empty().prepend($("#main > .content > .top"));
		}
		
		/** custom category page marker class 
		* added to firstHeading because requesting the page <body> (which normally has marker classes) on every category page load is 
		* not a good idea - its the parent for the whole page. The firstHeading is siblings with every other 1st child of the page content,
		* which includes the div.top on pages with a top banner image set. (But this can be used on non-bannered cat pages as well)
		*/
		if ( mw.config.get('wgCategories').includes('Custom category pages') ) {
			document.getElementById("firstHeading").classList.add("category-custom");
		}
	}
	
	

});

MediaWiki

Common.js