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!

Business

How Does the Company Support Employee Growth and Development?

In today’s dynamic and competitive job market, organizations that prioritize employee...

Par 2025-06-11 13:23:23 0 9KB

Business

What to do if you have a mobile app idea: a beginner's guide.

What to do if you have a mobile app idea: a beginner's guide. One fine morning, you wake up with...

Par 2024-08-28 22:25:54 0 22KB

Mental Health

Dyslexia: Society and culture

As is the case with any disorder, society often makes an assessment based on incomplete...

Par 2023-07-10 17:29:57 0 13KB

Marketing and Advertising

What Industries Spend the Most on Advertising?

Advertising drives awareness, engagement, and revenue, but not all industries invest in it...

Par 2026-01-06 15:32:58 0 828

Business

How Do Business Consultants Identify the Needs of a Company?

Business consultants play a crucial role in helping companies identify their needs, challenges,...

Par 2025-02-10 18:23:41 0 15KB