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stats/apps/public/content/docs/(tracking)/sdks/script.mdx
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---
title: Script Tag
description: The OpenPanel Web SDK allows you to track user behavior on your website using a simple script tag. This guide provides instructions for installing and using the Web SDK in your project.
---
import { Step, Steps } from 'fumadocs-ui/components/steps';
import { PersonalDataWarning } from '@/components/personal-data-warning';
import CommonSdkConfig from '@/components/common-sdk-config.mdx';
import WebSdkConfig from '@/components/web-sdk-config.mdx';
## Installation
Just insert this snippet and replace `YOUR_CLIENT_ID` with your client id.
```html title="index.html" /clientId: 'YOUR_CLIENT_ID'/
<script>
window.op=window.op||function(){var n=[];return new Proxy(function(){arguments.length&&n.push([].slice.call(arguments))},{get:function(t,r){return"q"===r?n:function(){n.push([r].concat([].slice.call(arguments)))}} ,has:function(t,r){return"q"===r}}) }();
window.op('init', {
clientId: 'YOUR_CLIENT_ID',
trackScreenViews: true,
trackOutgoingLinks: true,
trackAttributes: true,
});
</script>
<script src="https://openpanel.dev/op1.js" defer async></script>
```
#### Options
<CommonSdkConfig />
<WebSdkConfig />
## Usage
### Tracking Events
You can track events with two different methods: by calling the `window.op('track')` directly or by adding `data-track` attributes to your HTML elements.
```html title="index.html"
<button type="button" onclick="window.op('track', 'my_event', { foo: 'bar' })">
Track event
</button>
```
```html title="index.html"
<button type="button" data-track="my_event" data-foo="bar">Track event</button>
```
### Identifying Users
To identify a user, call the `window.op('identify')` method with a unique identifier.
```js title="main.js"
window.op('identify', {
profileId: '123', // Required
firstName: 'Joe',
lastName: 'Doe',
email: 'joe@doe.com',
properties: {
tier: 'premium',
},
});
```
### Setting Global Properties
To set properties that will be sent with every event:
```js title="main.js"
window.op('setGlobalProperties', {
app_version: '1.0.2',
environment: 'production',
});
```
### Incrementing Properties
To increment a numeric property on a user profile.
- `value` is the amount to increment the property by. If not provided, the property will be incremented by 1.
```js title="main.js"
window.op('increment', {
profileId: '1',
property: 'visits',
value: 1 // optional
});
```
### Decrementing Properties
To decrement a numeric property on a user profile.
- `value` is the amount to decrement the property by. If not provided, the property will be decremented by 1.
```js title="main.js"
window.op('decrement', {
profileId: '1',
property: 'visits',
value: 1 // optional
});
```
### Clearing User Data
To clear the current user's data:
```js title="main.js"
window.op('clear');
```
## Advanced Usage
### Filtering events
You can filter out events by adding a `filter` property to the `init` method.
Below is an example of how to disable tracking for users who have a `disable_tracking` item in their local storage.
```js title="main.js"
window.op('init', {
clientId: 'YOUR_CLIENT_ID',
trackScreenViews: true,
trackOutgoingLinks: true,
trackAttributes: true,
filter: () => localStorage.getItem('disable_tracking') === undefined,
});
```
### Using the Web SDK with NPM
<Steps>
#### Step 1: Install the SDK
```npm
npm install @openpanel/web
```
#### Step 2: Initialize the SDK
```js title="op.js"
import { OpenPanel } from '@openpanel/web';
const op = new OpenPanel({
clientId: 'YOUR_CLIENT_ID',
trackScreenViews: true,
trackOutgoingLinks: true,
trackAttributes: true,
});
```
#### Step 3: Use the SDK
```js title="main.js"
import { op } from './op.js';
op.track('my_event', { foo: 'bar' });
```
</Steps>
### Typescript
Getting ts errors when using the SDK? You can add a custom type definition file to your project.
#### Simple
Just paste this code in any of your `.d.ts` files.
```ts title="op.d.ts"
declare global {
interface Window {
op: {
q?: string[][];
(...args: [
'init' | 'track' | 'identify' | 'setGlobalProperties' | 'increment' | 'decrement' | 'clear',
...any[]
]): void;
};
}
}
```
#### Strict typing (from sdk)
<Steps>
##### Step 1: Install the SDK
```npm
npm install @openpanel/web
```
##### Step 2: Create a type definition file
Create a `op.d.ts`file and paste the following code:
```ts title="op.d.ts"
/// <reference types="@openpanel/web" />
```
</Steps>