本文档详细介绍了推荐的 Google Analytics(分析)代码和备用异步代码中包含的代码。
本文中的信息仅用于教学目的,因为通常都应该以最精简的形式使用代码,以便将用户受到的性能影响降至最低。
Google Analytics(分析)代码
以下两部分分别显示了精简版和非精简版的 Google Analytics(分析)代码。
精简版
<!-- Google Analytics --> <script> (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){ (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o), m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m) })(window,document,'script','https://www.google-analytics.com/analytics.js','ga'); ga('create', 'UA-XXXXX-Y', 'auto'); ga('send', 'pageview'); </script> <!-- End Google Analytics -->
非精简版
<!-- Google Analytics --> <script> /** * Creates a temporary global ga object and loads analytics.js. * Parameters o, a, and m are all used internally. They could have been * declared using 'var', instead they are declared as parameters to save * 4 bytes ('var '). * * @param {Window} i The global context object. * @param {HTMLDocument} s The DOM document object. * @param {string} o Must be 'script'. * @param {string} g Protocol relative URL of the analytics.js script. * @param {string} r Global name of analytics object. Defaults to 'ga'. * @param {HTMLElement} a Async script tag. * @param {HTMLElement} m First script tag in document. */ (function(i, s, o, g, r, a, m){ i['GoogleAnalyticsObject'] = r; // Acts as a pointer to support renaming. // Creates an initial ga() function. // The queued commands will be executed once analytics.js loads. i[r] = i[r] || function() { (i[r].q = i[r].q || []).push(arguments) }, // Sets the time (as an integer) this tag was executed. // Used for timing hits. i[r].l = 1 * new Date(); // Insert the script tag asynchronously. // Inserts above current tag to prevent blocking in addition to using the // async attribute. a = s.createElement(o), m = s.getElementsByTagName(o)[0]; a.async = 1; a.src = g; m.parentNode.insertBefore(a, m) })(window, document, 'script', '//www.google-analytics.com/analytics.js', 'ga'); // Creates a default tracker with automatic cookie domain configuration. ga('create', 'UA-XXXXX-Y', 'auto'); // Sends a pageview hit from the tracker just created. ga('send', 'pageview'); </script> <!-- End Google Analytics -->
备用异步代码
以下两部分分别显示了精简版和非精简版的备用异步代码。要详细了解您应该使用哪种代码,请参阅将 analytics.js 添加到网站中。
精简版
<!-- Google Analytics --> <script> window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date; ga('create', 'UA-XXXXX-Y', 'auto'); ga('send', 'pageview'); </script> <script async src='https://www.google-analytics.com/analytics.js'></script> <!-- End Google Analytics -->
非精简版
<!-- Google Analytics --> <script> // Creates an initial ga() function. // The queued commands will be executed once analytics.js loads. window.ga = window.ga || function() { (ga.q = ga.q || []).push(arguments) }; // Sets the time (as an integer) this tag was executed. // Used for timing hits. ga.l = +new Date; // Creates a default tracker with automatic cookie domain configuration. ga('create', 'UA-XXXXX-Y', 'auto'); // Sends a pageview hit from the tracker just created. ga('send', 'pageview'); </script> <!-- Sets the `async` attribute to load the script asynchronously. --> <script async src='//www.google-analytics.com/analytics.js'></script> <!-- End Google Analytics -->