JavaScript set()

Posted 2023-05-17 19:24:16

11K

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

What is software licensing and how does it work?

Any software is a product of intellectual activity, so only the developer or copyright holder can...

By 2024-09-25 17:52:31 0 25K

Business

What Are the Project Requirements and Deliverables?

Defining What Needs to Be Delivered, How, and to What Quality Standards** Once the...

By 2025-07-12 20:47:28 0 6K

Internet

How to create viral tiktok videoa

For several years now, TikTok has been the leader among social networks, especially among short...

By 2023-06-09 19:36:56 0 22K

Business

What Are the Key Responsibilities of a Startup CEO?

The role of a startup CEO is both exhilarating and daunting. Unlike in mature companies...

By 2025-05-01 16:21:54 0 9K

Social Issues

The Great Dictator. (1940)

Dictator Adenoid Hynkel tries to expand his empire while a poor Jewish barber tries to avoid...

By 2022-12-21 19:24:05 0 21K