What are computed properties in Vue.js?

Can you explain what computed properties are in Vue.js?

Sure! Computed properties in Vue.js are properties that are calculated based on other data properties. They are reactive, meaning they automatically update when their dependencies change.

How do I define a computed property in a Vue component?

You define a computed property in the computed option of your Vue component. For example:

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

Can computed properties be used for methods?

Not exactly. Computed properties are meant for derived state, while methods are for actions. However, you can use computed properties to return values that depend on methods.

What are the benefits of using computed properties?

Computed properties help in optimizing performance by caching results and reducing unnecessary calculations. They also make your templates cleaner and more readable.