MediaWiki:Gadget-titleparenthesis.js

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$(function () {
    var conf = mw.config.get([
       'wgNamespaceNumber',
       'wgTitle',
       'wgAction'
    ]);

	if (conf.wgNamespaceNumber !== 0 || conf.wgTitle.lastIndexOf('(') < 0 ||
		conf.wgAction !== 'view' || $('.no-parenthesis-style').length) {
		return;
	} 
	
	// use the title in the DOM so this respects DISPLAYTITLE
	var title = $('h1#firstHeading').text(),
		start = title.lastIndexOf('('),
		end = title.substring(start, title.length).lastIndexOf(')');

	// add offset here
	end += start + 1;
	
	$('h1#firstHeading')
		.empty()
		.append(
			title.substring(0, start),
			$('<span>')
				.addClass('title-parenthesis')
				.text(title.substring(start, end)),
			title.substring(end, title.length)
		);
});