b/JavaScript/Reference/Global_Objects/Function/displayName) Non-standard 
    4. [ ` Function: length ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length)
    5. [ ` Function: name ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/name)
    6. [ ` Function: prototype ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/prototype)
  8. Methods 
    1. [ ` Function.prototype[@@hasInstance]() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/@@hasInstance)
    2. [ ` Function.prototype.apply() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/apply)
    3. [ ` Function.prototype.bind() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/bind)
    4. [ ` Function.prototype.call() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call)
    5. [ ` Function.prototype.toString() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/toString)
  9. [ ` Object ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object)
  10. Properties 
    1. [ ` Object.prototype.constructor ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor)
    2. [ ` Object.prototype.__proto__ ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/proto) Deprecated 
  11. Methods 
    1. [ ` Object.prototype.__defineGetter__() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineGetter__) Deprecated 
    2. [ ` Object.prototype.__defineSetter__() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__defineSetter__) Deprecated 
    3. [ ` Object.prototype.__lookupGetter__() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupGetter__) Deprecated 
    4. [ ` Object.prototype.__lookupSetter__() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/__lookupSetter__) Deprecated 
    5. [ ` Object.prototype.hasOwnProperty() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty)
    6. [ ` Object.prototype.isPrototypeOf() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/isPrototypeOf)
    7. [ ` Object.prototype.propertyIsEnumerable() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable)
    8. [ ` Object.prototype.toLocaleString() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toLocaleString)
    9. [ ` Object.prototype.toString() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString)
    10. [ ` Object.prototype.valueOf() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/valueOf)

##  In this article

  * Try it 
  * Constructor 
  * Instance properties 
  * Instance methods 
  * Examples 
  * Specifications 
  * Browser compatibility 
  * See also 

#  AsyncGenerator

The **` AsyncGenerator ` ** object is returned by an [ async generator
function ](/en-US/docs/Web/JavaScript/Reference/Statements/async_function*)
and it conforms to both the [ async iterable protocol and the async iterator
protocol ](/en-
US/docs/Web/JavaScript/Reference/Iteration_protocols#the_async_iterator_and_async_iterable_protocols)
.

Async generator methods always yield [ ` Promise ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Promise) objects.

` AsyncGenerator ` is a subclass of the hidden [ ` AsyncIterator ` ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/AsyncIterator) class.

##  Try it

##  Constructor

The ` AsyncGenerator ` constructor is not available globally. Instances of `
AsyncGenerator ` must be returned from [ async generator functions ](/en-
US/docs/Web/JavaScript/Reference/Statements/async_function*)

js

    
    
    async function* createAsyncGenerator() {
      yield await Promise.resolve(1);
      yield await Promise.resolve(2);
      yield await Promise.resolve(3);
    }
    const asyncGen = createAsyncGenerator();
    asyncGen.next().then((res) => console.log(res.value)); // 1
    asyncGen.next().then((res) => console.log(res.value)); //