chrome-jsblacklist/background.html at master · jou/chrome-jsblacklist · GitHub

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<html>
	<script type="text/javascript">
		var blacklistRegex,
			domainRegex = new RegExp('http://([^/]+)', 'i'),
			escapeRegex = (function() {
				var specials = [ ".", "*", "+", "?", "|", "(", ")", "[", "]", "{", "}", "\\" ];
				return new RegExp( "(\\" + specials.join("|\\") + ")", "g" );
			})(),
			defaultDomains = ['tynt.com', 'intellitxt.com', 'vibrantmedia.com', 'snap.com'].join("\n");

		function escapeDomain(s) {
			return s.replace(escapeRegex, "\\$1");
		}

		function rebuildPattern() {
			domains = (localStorage['domains'] || defaultDomains);
			domains = domains.split("\n").map(escapeDomain);

			blacklistRegex = domains.length > 0 ?
				"(^|\\.)(" + domains.join("|") + ')$' :
				null;
		}

		rebuildPattern();

		// Send regex to content script when they request it.
		chrome.extension.onRequest.addListener(
			function(request, sender, sendResponse) {
				sendResponse(blacklistRegex);
			}
		);
	</script>
</html>