JavaScript set()

Posted 2023-05-17 19:24:16

12K

In JavaScript, a setter can be used to execute a function whenever a specified property is attempted to be changed. Setters are most often used in conjunction with getters to create a type of pseudo-property. It is not possible to simultaneously have a setter on a property that holds an actual value.

Examples

Defining a setter on new objects in object initializers

The following example define a pseudo-property current of object language. When current is assigned a value, it updates log with that value:

const language = {
  set current(name) {
    this.log.push(name);
  },
  log: [],
};

language.current = "EN";
console.log(language.log); // ['EN']

language.current = "FA";
console.log(language.log); // ['EN', 'FA']

Note that current is not defined, and any attempts to access it will result in undefined.

Please log in to like, share and comment!

Business

The Moment You Realize It Isn’t About Tasks

There’s a point—quiet, unceremonious—when managing office staff stops being...

By 2026-04-29 16:37:13 0 2K

Marketing and Advertising

What Are Media Relations? Building Strong Connections That Shape Public Perception

Introduction: Why Media Relations Matter More Than Ever In a world overflowing with content and...

By 2025-10-27 17:13:42 0 5K

Marketing and Advertising

How to Do Mobile App Marketing: From Installs to Retention and Growth

Introduction Launching a mobile app is only half the battle. The true challenge begins once your...

By 2025-10-17 15:30:29 0 9K

Marketing and Advertising

What Is Paid User Acquisition?

Paid user acquisition (Paid UA) is the process of acquiring new users through paid advertising...

By 2026-02-26 15:04:13 0 561

Financial Services

Demand and the Determinants of Demand

In a competitive market, demand for and supply of a good or service determine the...

By 2023-01-26 14:43:23 0 21K