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 = { neveropen() { return 'answer'; }}Object.setPrototypeOf(obj, object3);console.dir(obj);console.log(obj.neveropen());console.log(obj.gfg()); |
Output
true
true
false
{ neveropen: [Function: neveropen] }
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.
| Instance Methods
|
Description
|
Example
|
|---|---|---|
| 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. |
