---
title: "JSValueMakeNumber(_:_:)"
framework: javascriptcore
role: symbol
role_heading: Function
path: "javascriptcore/jsvaluemakenumber(_:_:)"
---

# JSValueMakeNumber(_:_:)

Creates a JavaScript value of the number type.

## Declaration

```swift
func JSValueMakeNumber(_ ctx: JSContextRef!, _ number: Double) -> JSValueRef!
```

## Parameters

- `ctx`: The execution context to use.
- `number`: The double to assign to the newly created doc://com.apple.javascriptcore/documentation/JavaScriptCore/JSValueRef.

## Return Value

Return Value A JSValueRef of the number type that represents the value of number.

## See Also

### Creating Values

- [JSValueMakeUndefined(_:)](javascriptcore/jsvaluemakeundefined(_:).md)
- [JSValueMakeNull(_:)](javascriptcore/jsvaluemakenull(_:).md)
- [JSValueMakeBoolean(_:_:)](javascriptcore/jsvaluemakeboolean(_:_:).md)
- [JSValueMakeString(_:_:)](javascriptcore/jsvaluemakestring(_:_:).md)
- [JSValueMakeSymbol(_:_:)](javascriptcore/jsvaluemakesymbol(_:_:).md)