Creating computed properties in Vuejs using Typescript is a powerful feature that can enhance the functionality

Question

Creating computed properties in Vuejs using Typescript is a powerful feature that can enhance the functionality

Whenever I open my browser, I encounter the following message:

Avoid mutating a prop directly since the value will be overwritten whenever the parent component re-renders. Instead, use a data or computed property based on the prop's value. Prop being mutated: "dataElements"

Within my component, I have defined

@Prop() private dataElements: any[];

. This particular prop undergoes changes from both the parent and the child components, and it may require a watcher to perform certain operations when its value is modified.

Is there a way for me to create a computed property based on this prop?

typescript vue.js

Answer 1

Answer №1

When working with Vue, it is important to avoid mutating a prop that has been passed down from a parent component to a child component. This is because any changes made to the prop in the child component can be easily overwritten by the parent component.

If you need to mutate a prop, it is best to create a local copy of it within the child component. One way to do this is by using a computed property that returns a new array based on the original prop.

computed: {
    updatedElements() {
        return [...this.originalElements]
    }
}

Remember to always notify the parent component of any changes made to the array by emitting an event. This will ensure that the appropriate mutations are handled and the prop is passed back to the child component as needed.

Answer 2

When working with Vue, it is important to avoid mutating a prop that has been passed down from a parent component to a child component. This is because any changes made to the prop in the child component can be easily overwritten by the parent component.

If you need to mutate a prop, it is best to create a local copy of it within the child component. One way to do this is by using a computed property that returns a new array based on the original prop.

computed: {
    updatedElements() {
        return [...this.originalElements]
    }
}

Remember to always notify the parent component of any changes made to the array by emitting an event. This will ensure that the appropriate mutations are handled and the prop is passed back to the child component as needed.

Creating computed properties in Vuejs using Typescript is a powerful feature that can enhance the functionality

Answer №1

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