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!

Television

CBS, WIVB 4 Live TV. Buffalo, New York, United States.

WIVB-TV, (UHF digital channel 39), is a CBS-affiliated television station located in Buffalo, New...

By 2022-11-03 10:26:05 0 47K

Business

How Is the Success of an Influencer Marketing Campaign Measured?

Influencer marketing has become one of the most powerful tools for brands to connect with their...

By 2025-02-27 17:07:04 0 16K

Supercomputing

How Studying The Brain Helps Build A Neuromorphic Supercomputer

How Studying The Brain Helps Build A Neuromorphic Supercomputer Australian scientists are...

By 2024-03-29 22:16:37 0 26K

Other

Silicon Cowboys. (2016)

Three friends dream up the Compaq portable computer at a Texas diner in 1981, and soon find...

By 2023-06-09 20:27:47 0 37K

Business and Corporate Finance

What Is Financial Modeling in Corporate Finance?

What Is Financial Modeling in Corporate Finance? Excel Modeling and Forecasting Explained...

By 2026-01-21 19:27:28 0 2K