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