Feature - Google Analytics - Added JSDoc to Google Analytics functions.

server/modules/google-analytics.js

@@ -1,8 +1,22 @@
 let GoogleAnalytics = (() => {
+    /**
+     * Returns a string that represents the javascript that is required to insert the Google Analytics scripts
+     * into a webpage.
+     * @param tagId Google UA/G/AW/DC Property ID to use with the Google Analytics script.
+     * @returns {string}
+     */
     function getGoogleAnalyticsScript(tagId) {
         return "<script async src=\"https://www.googletagmanager.com/gtag/js?id=" + tagId + "\"></script>" +
             "<script>window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date());gtag('config', '" + tagId + "'); </script>";
     }
+
+    /**
+     * Returns true if the tag conforms to the format of 1-2 Letters followed by a dash and 8 numbers.
+     * This should take care of the following property tag formats:
+     * UA-########, G-########, AW-########, DC-########
+     * @param {String} tagInput Google UA/G/AW/DC Property ID
+     * @returns {boolean}
+     */
     function isValidTag(tagInput) {
         const re = /^\w{1,2}-\d{8}$/g;
         return tagInput.match(re) != null;