# Calling Pattern

All calls to Microsoft Graph are chained together starting with **.api()**, then chain [query parameters](./QueryParameters.md) and end with an [action](./Actions.md).

## Path supports the following formats

-   `me`
-   `/me`
-   `https://graph.microsoft.com/v1.0/me`
-   `https://graph.microsoft.com/beta/me`
-   `me/events?$filter=startswith(subject, "Adventure")`

## Promise based calling

Getting user details with `async`/`await`,

```typescript
try {
	let res = await client.api("/me").get();
	console.log(res);
} catch (error) {
	throw error;
}
```

Getting user details with `then`/`catch`,

```typescript
client
	.api("/me")
	.get()
	.then((res) => {
		console.log(res);
	})
	.catch((err) => {
		console.log(err);
	});
```

## Callback based calling

Getting user details by passing `callback`,

```typescript
client.api("/me").get((err, res) => {
	console.log(res);
});
```