# Multiple domain tracking

By default the plugin will recognise the config object set inside the global options as the main configuration for the all tracking system, but it is possible to include more domains to add for each event fired by simply adding an array of configurations

```javascript
import Vue from "vue";
import VueGtag from "vue-gtag";

Vue.use(VueGtag, {
  config: { id: "UA-1234567-1" },
  includes: [
    { id: 'UA-1234567-2' },
    { 
      id: 'UA-1234567-3',
      params: {
        send_page_view: false
      }
    }
  ]
});

```

With this setup the initial configuration will be sent 3 times and the third time it will also send custom parameters with it.

All events fired after the installation will have a new property called `send_to` inside each payload, which is a way for gtag.js to send events for all domains included in the array.

For example this login event will be fired for all your domains: vue-gtag will inject the `send_to` parameter for your automatically.

```javascript
export default {
  name: 'MyComponent',

  methods: {
    login () {
      this.$gtag.event('login', { method: 'Google' })
    }
  }
}
```

{% hint style="info" %}
It is possible to override the send\_to parameter at any time by just adding it to your event
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://matteo-gabriele.gitbook.io/vue-gtag/master/multiple-domain-tracking.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
