JavaScript set()
Posted 2023-05-17 19:24:16
0
7K
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
.
Search
Categories
- Arts
- Business
- Computers
- Games
- Health
- Home
- Kids and Teens
- Money
- News
- Recreation
- Reference
- Regional
- Science
- Shopping
- Society
- Sports
- Бизнес
- Деньги
- Дом
- Досуг
- Здоровье
- Игры
- Искусство
- Источники информации
- Компьютеры
- Наука
- Новости и СМИ
- Общество
- Покупки
- Спорт
- Страны и регионы
- World
Read More
Why Do I Want to Start a Business?
Starting a business is a big decision—one that involves time, effort, and often a...
The World of Computer Graphics: An Art and Science
Computer graphics is an interdisciplinary field that combines art, technology, and mathematics to...
Autism Spectrum: Alternative medicine
A multitude of researched alternative therapies have also been implemented. Many have resulted in...
The Current War. (2018)
The dramatic story of the cutthroat race between electricity titans Thomas A. Edison and George...
Лицо со шрамом. Scarface. (1983)
Весной 1980 года был открыт порт Мэйриэл Харбор, и тысячи кубинских беженцев ринулись в...