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!

Productivity

How do I avoid burnout while staying productive?

How Do I Avoid Burnout While Staying Productive? Burnout occurs when chronic stress outpaces...

By 2026-02-19 20:26:23 0 1K

Business

LG launches Native Screensaver Ads. What is it?

The American company LG Ad Solutions, a division of the South Korean giant - the manufacturer of...

By 2024-09-18 17:35:52 0 17K

Social Issues

The Vault (2021)

Follows a genius engineering graduate who is interested in the Bank of Spain's safe. My Link

By 2022-09-14 20:38:07 0 30K

Financial Services

Macroeconomic perspectives on demand and supply

Key points Keynes’ Law states that demand creates its own supply....

By 2023-03-13 20:40:21 0 14K

Programming

Python Slice Object

A slice object is used to specify how to slice a sequence. You can specify where to start the...

By 2023-02-27 22:23:14 0 12K