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!

Relationships

Nurturing Relationships in Modern Society: Building Bonds Amidst Change

In the intricate tapestry of society, relationships serve as the threads that bind individuals...

By 2024-06-12 15:26:29 0 15K

Financial Services

The Production Possibilities Frontier

Key Points The Production Possibilities Frontier (PPF) is a graph that shows all the...

By 2023-06-23 19:45:38 0 12K

Science Fiction and Fantasy

Spider-Man: Into the Spider-Verse. (2018)

Teen Miles Morales becomes the Spider-Man of his universe, and must join with five spider-powered...

By 2022-12-23 18:59:33 0 20K

Ужасы

Головокружение. Vertigo. (1958)

Скотти Фергюсон - отставной сыщик, которого не назовешь баловнем судьбы: одинокий, оставшийся за...

By 2023-01-17 10:22:33 0 30K

Business

What Are Common Questions Asked in Interviews About Conflict Resolution?

Conflict resolution is a critical competency in the modern workplace. During interviews, hiring...

By 2025-08-05 14:55:19 0 3K