JavaScript set()

Posted 2023-05-17 19:24:16

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!

Programming

JavaScript has()

The has() function of the map object accepts a key in string format and returns a...

By 2023-05-16 11:21:29 0 8K

Programming

Python Fun Fact

There's a fact about Python that you might not know! Python has a module called "this". The...

By 2023-02-03 19:15:26 0 9K

Business

Why is the Issue of Sustainability Important for Development?

Sustainability is one of the most pressing issues facing global development today. As the world...

By 2025-02-03 16:08:42 0 8K

Television

Fox 31 Denver. Live TV. Colorado, USA

KDVR is a Fox-affiliated television station located in Denver, Colorado, United States. When no...

By 2022-10-17 10:43:26 0 25K

Homemaking

Pottery / Do-it-yourself ceramics

What ceramics are made of and where to get materials for workCeramics is baked clay, which is the...

By 2023-04-20 18:53:47 0 14K