What are computed properties in Vue.js?

What are computed properties in Vue.js?

Computed properties in Vue.js are properties that are calculated based on other data properties. They are reactive and will update automatically when their dependencies change.

How do I define a computed property?

You can define a computed property in a Vue component by adding a computed object. For example:

computed: {
  fullName() {
    return `${this.firstName} ${this.lastName}`;
  }
}

Can computed properties be used for methods?

Computed properties are not methods, but they can be used to simplify method calls by caching results based on dependencies. If you need to perform an action, use methods instead.

What’s the difference between computed properties and methods?

The main difference is that computed properties are cached based on their dependencies, while methods are re-evaluated every time they are called.