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# init(virtualMachine:)

Creates a new JavaScript context associated with a specific virtual machine.

```
init!(virtualMachine: JSVirtualMachine!)
```

## Parameters

`virtualMachine`

The virtual machine with which to associate the new context.

## Return Value

A new JavaScript context.

## Discussion

By default, each context has an independent virtual machine (a [`JSVirtualMachine`](/documentation/JavaScriptCore/JSVirtualMachine) object). You cannot pass JavaScript values between contexts in different virtual machines. Use this initializer to create a context that shares its virtual machine with other JavaScript contexts to allow passing [`JSValue`](/documentation/JavaScriptCore/JSValue) objects between those contexts.

---

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