JavaScript set()

Posté 2023-05-17 19:24:16

11KB

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.

Connectez-vous pour aimer, partager et commenter!

Personal Finance

What Is the Median Salary in My City or Country?

What Is the Median Salary in My City or Country? A Practical Guide to Understanding and Finding...

Par 2025-11-28 21:27:54 0 3KB

E-Books

The Rise and Impact of E-books: Revolutionizing Reading in the Digital Age

In the digital age, e-books have transformed the way people read and interact with literature....

Par 2024-11-20 16:29:33 0 10KB

Business

Who Can Benefit from Mentoring?

Mentoring is often associated with early-career professionals, but its value extends far beyond...

Par 2025-07-18 17:35:49 0 4KB

Business

What Is Viral Growth?

In the digital age, many of the fastest-growing companies—Facebook, TikTok, Dropbox, and...

Par 2025-09-17 10:44:08 0 4KB

Television

FOX SOUL Live TV USA

Celebrate Black Culture. FOX SOUL is a streaming platform for The Culture! We amplify Black...

Par 2022-09-04 08:47:33 0 40KB