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!

Социальные проблемы

Довод. Tenet. (2020)

После теракта в киевском оперном театре агент ЦРУ объединяется с британской разведкой, чтобы...

By 2022-10-15 22:43:39 0 33K

Biography

How to write an autobiography

An autobiography is a short story about yourself, which allows you to find out general...

By 2022-10-22 12:07:43 0 24K

Business

How Would You Describe the Company Culture?

Company culture is more than a buzzword—it’s the foundation that shapes how employees...

By 2025-08-09 18:27:40 0 5K

Life Issues

Before Sunrise. (1995)

A young man and woman meet on a train in Europe, and wind up spending one evening together in...

By 2023-03-20 20:33:26 0 23K

Marketing and Advertising

What Skills Are Essential for a CMO?

The role of the Chief Marketing Officer (CMO) is one of the most complex in modern business....

By 2025-09-25 15:37:03 0 2K