affect Object
    }
    

It can also be used with [ ` null ` -prototype objects ](/en-
US/docs/Web/JavaScript/Reference/Global_Objects/Object#null-prototype_objects)
. These do not inherit from ` Object.prototype ` , and so ` hasOwnProperty() `
is inaccessible.

js

    
    
    const foo = Object.create(null);
    foo.prop = "exists";
    if (Object.hasOwn(foo, "prop")) {
      console.log(foo.prop); // true - works irrespective of how the object is created.
    }
    

##  Specifications

Specification  
---  
[ ECMAScript Language Specification  
#  sec-object.hasown  ](https://tc39.es/ecma262/multipage/fundamental-
objects.html#sec-object.hasown)  
  
##  Browser compatibility

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

##  See also

  * [ Polyfill of ` Object.hasOwn ` in ` core-js ` ](https://github.com/zloirock/core-js#ecmascript-object)
  * [ ` Object.prototype.hasOwnProperty() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/hasOwnProperty)
  * [ Enumerability and ownership of properties ](/en-US/docs/Web/JavaScript/Enumerability_and_ownership_of_properties)
  * [ ` Object.getOwnPropertyNames() ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyNames)
  * [ ` for...in ` ](/en-US/docs/Web/JavaScript/Reference/Statements/for...in)
  * [ ` in ` ](/en-US/docs/Web/JavaScript/Reference/Operators/in)
  * [ Inheritance and the prototype chain ](/en-US/docs/Web/JavaScript/Inheritance_and_the_prototype_chain)

##  Help improve MDN

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