Question

We are setting up some server-side Google Analytics events and we recently transitioned our GA implementation to use Google Tag Manager. I would like to maintain some of the constants we use in GTM so that they can be controlled from there. A good example is which GA Tracking ID to use. We currently store this in a lookup field called "GA - Tracking ID Lookup".

We would like to find a way to retrieve the value of this GTM variable in javascript code on our site. Is this possible?

Answer 1

我认为，管理此问题的最佳方法是使用Data Layer。您的JS将能够读取数据层中的值，GTM也将能够读取。

如果要走这条路，可以将查询变量更改为GTM的数据层变量。

示例：

让您的服务器写出DOM元素以包含类似以下内容的分析跟踪ID

<meta name="ga-tracking-id" content="UA-1234567890-1" />

您还可以将相同的信息存储到dataLayer中：

<script>
   dataLayer = [{
      'ga-tracking-id': 'UA-1234567890-1',
   }];
</script>

然后可以使用GTM中的DataLayer变量类型来检索此数据。

通过一个GTM容器进行管理的另一种方法是在GTM中创建一个lookup table，然后根据哪个主机名使用不同的跟踪ID。

尽管我不确定您如何管理此问题，但将所有容器一起使用而不是在一个容器中更改跟踪ID也可能会更容易。

Is there a way to read the value of a Tag Manager variable in the client?

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