查看“MediaWiki:Common.js”的源代码

/* 这里的任何JavaScript将为所有用户在每次页面加载时加载。 */
function ModifySidebar( action, section, name, link ) {
	try {
		switch ( section ) {
			case 'languages':
				var target = 'p-lang';
				break;
			case 'toolbox':
				var target = 'p-tb';
				break;
			case 'navigation':
				var target = 'p-navigation';
				break;
			default:
				var target = 'p-' + section;
				break;
		}

		if ( action == 'add' ) {
			var node = document.getElementById( target )
							   .getElementsByTagName( 'div' )[0]
							   .getElementsByTagName( 'ul' )[0];

			var aNode = document.createElement( 'a' );
			var liNode = document.createElement( 'li' );

			aNode.appendChild( document.createTextNode( name ) );
			aNode.setAttribute( 'href', link );
			liNode.appendChild( aNode );
			liNode.className = 'plainlinks';
			node.appendChild( liNode );
		}

		if ( action == 'remove' ) {
			var list = document.getElementById( target )
							   .getElementsByTagName( 'div' )[0]
							   .getElementsByTagName( 'ul' )[0];

			var listelements = list.getElementsByTagName( 'li' );

			for ( var i = 0; i < listelements.length; i++ ) {
				if (
					listelements[i].getElementsByTagName( 'a' )[0].innerHTML == name ||
					listelements[i].getElementsByTagName( 'a' )[0].href == link
				)
				{
					list.removeChild( listelements[i] );
				}
			}
		}


	} catch( e ) {
		// 直接忽略异常的抛出
		return;
	}
}

function CustomizeModificationsOfSidebar() {
	// 将[[Special:CategoryTree|Special:CategoryTree]]加入工具段落
	ModifySidebar( 'add', 'toolbox', 'CategoryTree', 'https://en.wikipedia.org/wiki/Special:CategoryTree' );
	// 将[[Special:Upload|Special:Upload]]从工具段落移除
	ModifySidebar( 'remove', 'toolbox', 'Upload file', 'https://en.wikipedia.org/wiki/Special:Upload' );
}

jQuery( CustomizeModificationsOfSidebar );