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!

Money

What affects my credit rating?

What affects my credit rating? A credit rating is one of the most important financial markers...

By 2025-09-28 21:41:51 0 5K

Business

Interaction with contractors — how to improve work with a programmer

In general, is it worth trying to improve this interaction with developers at all? Why should the...

By 2024-09-18 16:35:51 0 15K

Financial Services

Law of demand

Key points The law of demand states that a higher price leads to a lower...

By 2023-06-26 19:13:43 0 13K

Business

How Can You Adapt Your Product Strategy to Market Changes?

In today’s fast-moving business environment, even the best product strategies can quickly...

By 2025-08-21 16:37:56 0 7K

Future

A future is a hypothetical segment of a timeline, a set of events that have not yet occurred, but...

By 2023-03-02 16:16:45 0 19K