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!

Personal Finance

What Are the Common Tax Credits I Might Qualify For?

What Are the Common Tax Credits I Might Qualify For? How Tax Credits Reduce Your Tax Bill and...

Par 2025-11-21 19:44:25 0 2KB

Business

What’s the Difference Between User Retention and Churn?

When businesses measure customer health, two metrics consistently come up: retention and churn....

Par 2025-09-16 16:33:48 0 3KB

Business

How Do I Find Prospects?

Finding prospects is the foundation of every business that intends to grow. Whether you’re...

Par 2025-12-08 18:29:27 0 1KB

Nature and Science

Princess Mononoke. (1997)

On a journey to find the cure for a Tatarigami's curse, Ashitaka finds himself in the middle of a...

Par 2023-01-04 20:54:21 0 22KB

Internet

Engaging Post Ideas That Will Boost Your Social Media Engagement

In today's digital world, where information literally overwhelms us from all sides, competition...

Par 2023-06-07 14:36:59 0 22KB