> For the complete documentation index, see [llms.txt](https://docs.wishi.me/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wishi.me/the-formal-stuff/pixel/set-up-events.md).
# Set up events
Set up events on your website to measure the actions like making a purchase.
All events are tracked by calling the Pixel's `wishiPixel(event, data)` function, with the event name, and a JSON object as its parameters. For example, here's a function call to track when a visitor has viewed a product page:
```javascript
window.wishiPixel('ProductViewed', {
partnerUserId: "123-123",
products: [
{
id: "1",
name: "Name",
buyUrl: "https://...",
imageUrl: "https: //...",
brand: "A name",
price: 123.99,
currency: "USD"
}
]
});
```
You can call the `wishiPixel(event, data)` function anywhere between your web page's opening and closing `` tags, either when the page loads, or when a visitor completes an action, such as clicking a button.
For example, if you wanted to track a standard purchase event *after a visitor has completed the purchase*, you could call the `wishiPixel('CheckoutCompleted', data)` function on your *purchase confirmation page*, like this:
```html
...
...
```
If instead you wanted to track the same event *when the visitor clicks a purchase button*, you could tie the `wishiPixel('CheckoutCompleted', data)` function call to the purchase button *on your checkout page*, like this:
```html
```
Note that the example above uses jQuery to trigger the function call, but you could trigger the function call using any method you wish.