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.

Vă rugăm să vă autentificați pentru a vă dori, partaja și comenta!

Economics

How Does Capitalism Affect Workers?

How Does Capitalism Affect Workers? Capitalism, the economic system where private individuals or...

By 2026-02-12 22:12:27 0 8K

Business

What Should I Look for When Hiring a Business Consultant?

Hiring a business consultant can be one of the best decisions a company makes, especially when...

By 2025-02-11 23:20:31 0 8K

Business

Can I Use Images From the Internet Legally?

The image was perfect. It captured exactly the mood the company wanted. The colors worked. The...

By 2026-06-11 12:31:42 0 2K

Economics

What is renewable energy economics?

What Is Renewable Energy Economics? There is a moment, usually just before dawn, when a wind...

By 2026-05-22 21:37:31 0 5K

Card Games

Collectible Card Game

Collectible Card Game A Collectible Card Game (CCG) is a type...

By 2024-04-10 00:52:26 0 14K