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JavaScript get Function

Last Updated : 24 Jun, 2024

JavaScript get function is used to access the properties of an object using dot notation or square brackets. It allows you to retrieve the value associated with a particular property key and the get function is often used when working with objects that implement JavaScript's getter function.

The get syntax mainly binds an object property to a function.

Syntax:

{ get prop() { /* … */ } }
{ get [expression]() { /* … */ } }

Parameters:

  • prop: Property name to which we bind the given function.
  • expression: We can also use the expression in place of the property name to bind the given function.

Return Value:

The get function() returns the value associated with the specified propertyName in the objectName. If the property does not exist. It will return undefined.

Define Getter on New Objects in Object Initializers

Define a getter function directly in an object initializer using get keyword followed by property name.

Example: In this example, we will create pseudo-property GFG() which will return


Output
Geeksforgeeks

Using Getters in Classes

You can define getters within the classes to access computed properties or provide encapsulated access to private variables.

Example:


Output
1

Deleting a Getter using the delete Operator

You can remove a getter from an object using delete operator.

Example:


Output
This is a getter Function
undefined

Defining a Getter on Existing Objects using defineProperty

You can add a getter to an existing object using the Object.defineProperty.

Example:


Output
Dynamic getter

Using a Computed Property Name

You can define a getter with a computed property name allowing dynamic property access.

Example:


Output
This is computed property name 

Defining Static Getter

Static getters are associated with the class rather than instances and can be accessed directly on the class.

Example:


Output
This is a static getter
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