t/constructor)

    

The constructor function that created the instance object. For ` AsyncFunction
` instances, the initial value is the [ ` AsyncFunction ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/AsyncFunction/AsyncFunction)
constructor.

` AsyncFunction.prototype[@@toStringTag] `

    

The initial value of the [ ` @@toStringTag ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/toStringTag) property
is the string ` "AsyncFunction" ` . This property is used in [ `
Object.prototype.toString() ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString) .

**Note:** ` AsyncFunction ` instances do not have the [ ` prototype ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Function/prototype) property.

##  Instance methods

_Inherits instance methods from its parent[ ` Function ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Function) _ .

##  Specifications

Specification  
---  
[ ECMAScript Language Specification  
#  sec-async-function-objects  ](https://tc39.es/ecma262/multipage/control-
abstraction-objects.html#sec-async-function-objects)  
  
##  Browser compatibility

BCD tables only load in the browser  with JavaScript enabled. Enable
JavaScript to view data.

##  See also

  * [ ` async function ` ](/en-US/docs/Web/JavaScript/Reference/Statements/async_function)
  * [ ` async function ` expression ](/en-US/docs/Web/JavaScript/Reference/Operators/async_function)
  * [ ` Function ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function)
  * [ ` AsyncGeneratorFunction ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/AsyncGeneratorFunction)
  * [ ` GeneratorFunction ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/GeneratorFunction)
  * [ Functions ](/en-US/docs/Web/JavaScript/Reference/Functions)

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