# Examples

Practical transformations you can adapt. Each reads the incoming `request` and returns a [message object](/introduction/justpush-studio/writing-code/the-message-object.md).

> These examples assume the [execution model](/introduction/justpush-studio/writing-code/execution-model.md): the webhook is available as `request`, and you send a notification by returning a message.

## Minimal message

```javascript
return {
    title: "Hello from Studio",
    message: "It works! 🎉",
    topic: "Default"
}
```

## Use values from the payload

```javascript
const { customer, amount } = request.body

return {
    title: "New payment",
    message: `${customer} paid €${amount}`,
    topic: "Payments",
    sound: "CASHREGISTER"
}
```

## Only notify on certain events

```javascript
const event = request.body.event

// Ignore everything except failures
if (event !== "alert.firing") {
    return
}

return {
    title: "🚨 Service down",
    message: request.body.summary,
    topic: "Alerts",
    priority: 4,          // highest — get my attention
    sound: "SIREN",
    requires_acknowledgement: true
}
```

## Green / red status alert

```javascript
const success = request.body.status === "success"

return {
    title: success ? "✅ Deploy succeeded" : "❌ Deploy failed",
    message: `${request.body.repo} → ${request.body.environment}`,
    topic: "Deploys",
    priority: success ? 1 : 4,
    sound: success ? "MAGIC" : "SPACEALARM"
}
```

## Add a button to the relevant page

```javascript
const issue = request.body.issue

return {
    title: `New issue: ${issue.title}`,
    message: issue.body?.slice(0, 200),
    topic: "GitHub",
    buttons: [
        { cta: "Open issue", url: issue.html_url }
    ]
}
```

## Include an image

```javascript
return {
    title: "New screenshot uploaded",
    message: request.body.filename,
    topic: "Uploads",
    images: [
        { url: request.body.url, caption: request.body.filename }
    ]
}
```

## Guard against missing data

```javascript
const body = request.body || {}

if (!body.message) {
    console.log("No message field in payload — skipping")
    return
}

return {
    title: body.title || "Notification",
    message: body.message,
    topic: body.topic || "Default"
}
```

> **Tip:** Use the [Test runner](/introduction/justpush-studio/testing-and-monitoring/testing-your-code.md) to paste a real payload and confirm your code produces the message you expect before going live.


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