TheAsyncFunction object provides methods forasync functions. In JavaScript, every async function is actually anAsyncFunction object.

Note thatAsyncFunction isnot a global object. It can be obtained with the following code:

const AsyncFunction = async function () {}.constructor;

AsyncFunction is a subclass ofFunction.

Constructor

AsyncFunction()

Creates a newAsyncFunction object.

Instance properties

Also inherits instance properties from its parentFunction.

These properties are defined onAsyncFunction.prototype and shared by allAsyncFunction instances.

AsyncFunction.prototype.constructor

The constructor function that created the instance object. ForAsyncFunction instances, the initial value is theAsyncFunction constructor.

AsyncFunction.prototype[Symbol.toStringTag]

The initial value of the[Symbol.toStringTag] property is the string"AsyncFunction". This property is used inObject.prototype.toString().

Instance methods

Inherits instance methods from its parentFunction.

Specifications

Browser compatibility

See also

• async function
• async function expression
• Function
• AsyncGeneratorFunction
• GeneratorFunction
• Functions