# HTML snippet
To start tracking events just add following snippet to the `` section of your website:
:::tip
In all examples below, replace `your-jitsu-domain.com` with your Jitsu installation domain.
Jitsu Cloud users may find domain in the top-right corner of Site's **Setup Instruction** page or
attach custom domain for a specific Site and use it instead.
:::
```html
```
## Configuration
You can configure Jitsu by adding `data-*` attributes to the
script tag. Example:
```html
```
List of available configuration options:
| Name | Description |
|------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `data-user-id` | Set's user id. Equivalent of calling `jitsu.identify(userId)` |
| `data-onload` | Function to call after the script has loaded. Function should be previously defined in `window` |
| `data-init-only` | By default, the script will send a `page` event. Set this to `true` to just initialize the library. You still will be able to send events manually by setting `data-onload` hook |
| `data-write-key` | Browser Write Key configured on Jitsu Site entity. If no Browser Write Key is added for Site entity, Site ID value can be used a Write Key. On Jitsu.Cloud can be omitted if Site has explicitly mapped domain name |
For the full list of available options, see [JavaScript Reference](/docs/sending-data/js-reference) section
Alternatively you can define window.jitsuConfig object before inserting the snippet. Properties
of the object be same as data attributes, but camel cased and without data- prefix:
```html
```
### Google Tag Manager
Google Tag Manager [strips `data-` attributes](https://support.google.com/tagmanager/thread/18040523/what-attributes-are-preserved-on-custom-html-tags-and-what-attributes-are-stripped?hl=en) from the script tag. To configure Jitsu in GTM, you can use
following snippet:
```html
```
### `onload` hook
You can specify a piece of code that will be executed after the script has loaded. This can be useful if you
want to send additional events or identify user. Example:
```html
```
### Jitsu Processing Queue
Sometimes you may want to send events to Jitsu when it's not guaranteed that Jitsu is initialized. For that case,
you can use `window.jitsuQ` object:
```javascript
(window.jitsuQ = window.jitsuQ || []).push(function(jitsu) {
//send events to Jitsu here
jitsu.page();
});
```
## Sending Events to Jitsu
`window.jitsu` object implements standard [Analytics.js](https://getanalytics.io/api/) interface. See a full list of methods in [JavaScript Reference](/docs/sending-data/js-reference) section