JavaScript set()

Veröffentlicht 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.

Bitte loggen Sie sich ein, um liken, teilen und zu kommentieren!

Business

What Skills Are Essential for a Product Manager?

Product management requires a unique blend of technical, strategic, and interpersonal skills....

Von 2025-08-15 20:32:44 0 3KB

Human Resources

What Are Collateral Resources: Definition and Examples

Section 1: Defining Collateral Resources We can think of collateral resources as a set of keys...

Von 2024-03-12 16:00:28 0 34KB

Homeowners

The Modern Homeowner: Challenges, Opportunities, and Responsibilities

Homeownership is often considered a milestone, a symbol of stability and financial success. For...

Von 2024-12-02 14:19:50 0 11KB

Business

Do Incubators Take Equity in Startups?

Startup incubators provide a wide range of valuable services—from mentorship and networking...

Von 2025-04-24 17:12:41 0 15KB

Искусство, культура и развлечения

Манк. Mank. (2020)

1940 год. Нью-йоркский острослов Герман Манкевич, когда-то приехавший покорять Голливуд и в целом...

Von 2022-09-25 21:17:14 0 26KB