JavaScript Reflect Reference
JavaScript Reflect is a built-in object. It gives access to other methods for interceptable operations. Like most objects in JavaScript, it is not a constructor.
Syntax:
Reflect.function()
Example: Below examples illustrate the Reflect.setPrototypeOf() method in JavaScript:
Javascript
const object1 = {};
console.log(Reflect.setPrototypeOf(object1, Object.prototype));
console.log(Reflect.setPrototypeOf(object1, null ));
const object2 = {};
console.log(Reflect.setPrototypeOf(Object.freeze(object2), null ));
let object3 = {
gfg() {
return 'value' ;
}
}
let obj = {
geeks() {
return 'answer' ;
}
}
Object.setPrototypeOf(obj, object3);
console.dir(obj);
console.log(obj.geeks());
console.log(obj.gfg());
|
Output
true
true
false
{ geeks: [Function: geeks] }
answer
value
Note: There are no Properties or Contructor in Reflect Object.
The complete list of JavaScript Reflect are listed below:
String Methods: JavaScript methods are actions that can be performed on objects. There are two types of String methods in JavaScript.
- Static Method: If the method is called using the Reflect class itself then it is called a static method.
apply() |
Call a function using the specified argument. |
|
construct() |
It gives the added option to specify a different prototype. |
|
defineProperty() |
Allow the precise addition to or modification of a property on an object. |
|
deleteProperty() |
Returns a Boolean value which indicates whether the property was successfully deleted. |
|
get() |
This method always returns the value of the property. |
|
getOwnPropertyDescriptor() |
Get the descriptor of an object. |
|
getPrototypeOf() |
Return the prototype of the specified object. |
|
has() |
Check whether the property exists in an object or not. It works like an operator as a function. |
|
isExtensible() |
Check whether an object is extensible or not. |
|
ownKeys() |
Return an array of the target object’s own property keys and it ignores the inherited properties. |
|
preventExtensions() |
Prevent the future extensions to the object which means prevent from adding new properties to the object. |
|
set() |
Set the value of an object property. |
|
setPrototypeOf() |
Set the prototype of a specified object to another object or to Null. |
|
Last Updated :
08 Aug, 2023
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