.hasOwn(this, "-prop-value")) {
        return this["-prop-value"];
      } else {
        // It doesn't look like one of my objects, so let's fall back on
        // the default behavior by reproducing the current behavior as best we can.
        // The apply behaves like "super" in some other languages.
        // Even though valueOf() doesn't take arguments, some other hook may.
        return current.apply(this, args);
      }
    };
    

**Warning:** Modifying the ` prototype ` property of any built-in constructor
is considered a bad practice and risks forward compatibility.

You can read more about prototypes in [ Inheritance and the prototype chain
](/en-US/docs/Web/JavaScript/Inheritance_and_the_prototype_chain) .

##  Specifications

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

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

##  See also

  * [ Object initializer ](/en-US/docs/Web/JavaScript/Reference/Operators/Object_initializer)

##  Help improve MDN

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