use standard URLSearchParams insead of custom functions

js/index.js

@@ -4,34 +4,8 @@
 
 
 	// utility functions
-	MyApp.Utils.getUrlParameter = function(name) {
-		name = name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
-		var regex = new RegExp('[\\?&]' + name + '=([^&#]*)');
-		var results = regex.exec(location.search);
-		return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
-	};
-
-	MyApp.Utils.removeURLParameter = function(url, parameter) {
-		//prefer to use l.search if you have a location/link object
-		var urlparts = url.split('?');
-		if (urlparts.length >= 2) {
-
-			var prefix = encodeURIComponent(parameter) + '=';
-			var pars = urlparts[1].split(/[&;]/g);
-
-			//reverse iteration as may be destructive
-			for (var i = pars.length; i-- > 0;) {
-				//idiom for string.startsWith
-				if (pars[i].lastIndexOf(prefix, 0) !== -1) {
-					pars.splice(i, 1);
-				}
-			}
-
-			return urlparts[0] + (pars.length > 0 ? '?' + pars.join('&') : '');
-		}
-		return url;
-	};
-
+	// MyApp.Utils.someUtilityFunction = function() {}
+	// MyApp.Utils.someOtherUtilityFunction = function() {}
 
 	// app functions
 	MyApp.renderShell = function() {
@@ -94,8 +68,8 @@
 			cookieMinutes: 5256000
 		},
 		whitelist: ['en', 'de', 'it'],
-		fallbackLng: 'it',
 		load: 'languageOnly',
+		fallbackLng: 'it',
 		backend: {
 			loadPath: '/i18n/{{lng}}.json'
 		}
@@ -103,10 +77,12 @@
 	.then(function() {
 		// language initialized
 		// if there is a lang query string parameter, remove it and reload: we save the language in a cookie so the url stays nice
-		if (MyApp.Utils.getUrlParameter('lang')) {
-			var newUrl = MyApp.Utils.removeURLParameter(window.location.toString(), 'lang');
-			//removeURLParameter does not return the hash. add it back if there is one.
-			newUrl = newUrl + window.location.hash;
+		var urlQueryString = new URLSearchParams(window.location.search);
+		if (urlQueryString.has('lang')) {
+			urlQueryString.delete('lang');
+			var newUrl = [location.protocol, '//', location.host, location.pathname].join('') +
+				urlQueryString.toString() +
+				window.location.hash;
 			window.location = newUrl;
 			return;
 		}