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!

Business

What Makes a Pitch Compelling?

A compelling pitch is more than just a list of features, numbers, or achievements. It’s a...

By 2025-12-03 15:57:20 0 2K

Marketing and Advertising

How Does Paid Advertising Affect Customer Acquisition?

Paid advertising is one of the fastest and most powerful ways to acquire customers. When executed...

By 2026-01-19 15:10:12 0 216

Marketing and Advertising

How to Measure the Success of Your Email Campaigns

Introduction Email marketing is one of the most effective ways to reach your audience, build...

By 2025-10-03 20:39:09 0 4K

Squash

Exploring the Elegance and Intensity of Squash: A Sport for the Agile and Strategic

Squash, often dubbed the "fastest racket sport," is an exhilarating and demanding game that...

By 2024-07-10 16:23:11 0 20K

Personal Finance

Understanding Financial Advice: Your Guide to Making Informed Money Decisions

Understanding Financial Advice: Your Guide to Making Informed Money Decisions In today’s...

By 2025-11-03 22:58:09 0 2K