JavaScript set()

Posted 2023-05-17 19:24:16

12K

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!

Travel

Named the most visited attractions in the world

The authoritative publication Travel + Leisure has published a list of the main tourist...

By 2023-01-03 14:47:15 0 24K

Economics

The Role of Globalization in Development Economics

The Role of Globalization in Development Economics Globalization has become one of the most...

By 2026-03-13 22:23:12 0 3K

Business

Which Metrics Matter Most at Growth Stages?

As a business grows, the metrics that matter most evolve. In the earliest stages, survival and...

By 2025-09-05 15:45:51 0 7K

Business and Corporate Finance

What Financial Ratios Are Important in Business?

What Financial Ratios Are Important in Business? Liquidity, Profitability, and Leverage Ratios...

By 2026-01-10 10:15:08 0 5K

Искусство, культура и развлечения

Я хотел спрятаться. Hidden Away. (2020)

Тони - сын итальянских эмигрантов. После смерти матери его усыновляет немецкоговорящая семья в...

By 2022-10-01 22:55:42 0 32K