Best practices for utilizing child component methods within a parent component in VUE

Question

Best practices for utilizing child component methods within a parent component in VUE

I am working with the ImageUpload.vue component, which is a straightforward Bootstrap modal containing a few methods.

I am currently exploring the best approach to utilize one of these methods. Could it be implemented like this:

const app = new Vue({
    components: {
        'component-image-upload': require('./components/ImageUpload.vue'),
    },
    el: '#app',
    data() {
        return {
            images: [],
            pagination: {
                previous: null,
                next: null
            }
        }
    },
    methods: {
        createImage: function(page) {
            this['component-image-upload'].load(image)
        }
    }
});

The main concept here is to effectively repurpose the model for editing existing image data.

javascript vue.js vuejs2 vue-component

Answer 1

Answer №1

It's important to consider the architecture of your application when invoking methods from a child component. Vue components serve as reusable building blocks for creating views, rather than vessels for sharing JavaScript logic throughout your entire project. If there is a need to share functionality across components, it's preferable to develop a module and import its functions into the parent Vue file. The recommended way to interact with child components is through prop-bindings, which pass data and can trigger re-renders within the child component. Communication from child to parent is facilitated by dispatching events, steering clear of intermingling logic between the two.

Nevertheless, if you choose to proceed:

To access methods from a child component in the parent template, an element must be present to ensure its mounting:

<component-image-upload ref="image" />

Subsequently, call any method on this component utilizing its reference:

createImage (page) {
  this.$refs.image.myMethod('this is how you call it from parent')
}

Answer 2

It's important to consider the architecture of your application when invoking methods from a child component. Vue components serve as reusable building blocks for creating views, rather than vessels for sharing JavaScript logic throughout your entire project. If there is a need to share functionality across components, it's preferable to develop a module and import its functions into the parent Vue file. The recommended way to interact with child components is through prop-bindings, which pass data and can trigger re-renders within the child component. Communication from child to parent is facilitated by dispatching events, steering clear of intermingling logic between the two.

Nevertheless, if you choose to proceed:

To access methods from a child component in the parent template, an element must be present to ensure its mounting:

<component-image-upload ref="image" />

Subsequently, call any method on this component utilizing its reference:

createImage (page) {
  this.$refs.image.myMethod('this is how you call it from parent')
}

Answer 3

Answer №2

If you want to interact with the #root element in your Vue instance, utilizing a Custom Event is the best approach.

You have the ability to trigger any event from your component to the root element by using Vue.

To trigger the event, simply use $emit('event-name')!

I trust this explanation is beneficial to you :)

Answer 4

If you want to interact with the #root element in your Vue instance, utilizing a Custom Event is the best approach.

You have the ability to trigger any event from your component to the root element by using Vue.

To trigger the event, simply use $emit('event-name')!

I trust this explanation is beneficial to you :)

Best practices for utilizing child component methods within a parent component in VUE

Answer №1

Answer №2

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