---
title: "JSObjectMakeDeferredPromise(_:_:_:_:)"
framework: javascriptcore
role: symbol
role_heading: Function
path: "javascriptcore/jsobjectmakedeferredpromise(_:_:_:_:)"
---

# JSObjectMakeDeferredPromise(_:_:_:_:)

Creates a JavaScript promise object by invoking the provided executor.

## Declaration

```swift
func JSObjectMakeDeferredPromise(_ ctx: JSContextRef!, _ resolve: UnsafeMutablePointer<JSObjectRef?>!, _ reject: UnsafeMutablePointer<JSObjectRef?>!, _ exception: UnsafeMutablePointer<JSValueRef?>!) -> JSObjectRef!
```

## Parameters

- `ctx`: The execution context to use.
- `resolve`: A pointer to a doc://com.apple.javascriptcore/documentation/JavaScriptCore/JSObjectRef to store the resolve function in for the new promise. Pass NULL if you don’t want to store the resolve callback.
- `reject`: A pointer to a doc://com.apple.javascriptcore/documentation/JavaScriptCore/JSObjectRef to store the reject function in for the new promise. Pass NULL if you don’t want to store the reject callback.
- `exception`: A pointer to a doc://com.apple.javascriptcore/documentation/JavaScriptCore/JSValueRef to store an exception in, if any. Pass NULL to discard any exception.

## Return Value

Return Value A JSObjectRef that’s a promise, or NULL if an exception occurs.

## See Also

### Working with Objects

- [JSObjectCallAsConstructor(_:_:_:_:_:)](javascriptcore/jsobjectcallasconstructor(_:_:_:_:_:).md)
- [JSObjectCallAsFunction(_:_:_:_:_:_:)](javascriptcore/jsobjectcallasfunction(_:_:_:_:_:_:).md)
- [JSObjectCopyPropertyNames(_:_:)](javascriptcore/jsobjectcopypropertynames(_:_:).md)
- [JSObjectDeleteProperty(_:_:_:_:)](javascriptcore/jsobjectdeleteproperty(_:_:_:_:).md)
- [JSObjectGetPrivate(_:)](javascriptcore/jsobjectgetprivate(_:).md)
- [JSObjectGetProperty(_:_:_:_:)](javascriptcore/jsobjectgetproperty(_:_:_:_:).md)
- [JSObjectGetPropertyAtIndex(_:_:_:_:)](javascriptcore/jsobjectgetpropertyatindex(_:_:_:_:).md)
- [JSObjectGetPrototype(_:_:)](javascriptcore/jsobjectgetprototype(_:_:).md)
- [JSObjectHasProperty(_:_:_:)](javascriptcore/jsobjecthasproperty(_:_:_:).md)
- [JSObjectIsConstructor(_:_:)](javascriptcore/jsobjectisconstructor(_:_:).md)
- [JSObjectIsFunction(_:_:)](javascriptcore/jsobjectisfunction(_:_:).md)
- [JSObjectMake(_:_:_:)](javascriptcore/jsobjectmake(_:_:_:).md)
- [JSObjectMakeArray(_:_:_:_:)](javascriptcore/jsobjectmakearray(_:_:_:_:).md)
- [JSObjectMakeConstructor(_:_:_:)](javascriptcore/jsobjectmakeconstructor(_:_:_:).md)
- [JSObjectMakeDate(_:_:_:_:)](javascriptcore/jsobjectmakedate(_:_:_:_:).md)