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# JSClassCreate(_:)

Creates a JavaScript class.

```
func JSClassCreate(_ definition: UnsafePointer<JSClassDefinition>!) -> JSClassRef!
```

## Parameters

`definition`

A [`JSClassDefinition`](/documentation/JavaScriptCore/JSClassDefinition) that defines the class.

## Return Value

A [`JSClassRef`](/documentation/JavaScriptCore/JSClassRef) with the specified definition suitable for use with [`JSObjectMake(_:_:_:)`](/documentation/JavaScriptCore/JSObjectMake(_:_:_:)). Ownership follows [The Create Rule](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFMemoryMgmt/Concepts/Ownership.html#//apple_ref/doc/uid/20001148-103029).

## Discussion

---

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