Methods for identifying when a Vue component has been updated based on property change

Question

Methods for identifying when a Vue component has been updated based on property change

I have a requirement to show a spinner in every Vue component.

My initial thought is to use v-if="loading" within the component's HTML.

How do I know when a component has finished loading? In other words, how can I tell when the DOM has been rendered and data binding is complete?

Based on the Vue lifecycle, the render process is complete when the update function is triggered.

So, do I really need to implement an update function in every single component to change the value of loading to false? Is there a simpler way to achieve this without extending components or any complex methods?

Ultimately, I would like to have access to this.loading in the Vue instance.

javascript vue.js

Answer 1

Answer №1

Absolutely, it's completely doable. Vue mixins can assist with that.

Mixins serve as a versatile method for distributing reusable functionalities among Vue components. A mixin object can encompass any component options. When a component utilizes a mixin, all options within the mixin will be seamlessly integrated into the component’s own options.

Note that utilizing the mounted hook is recommended if you need to monitor when the component is added to the DOM.

This function is invoked after the instance has been mounted, where el is substituted by the freshly created vm.$el. If the root instance is being mounted to an in-document element, vm.$el will also be in-document upon mount.

mixin.js:

export default {
  data() {
    return {
      loading: true
    }
  },
  mounted() {
    console.log('I have been mounted')
    this.loading = false
  }
}

Subsequently, globally register that mixin so it becomes accessible in all components:

import mixin from './mixin'

Vue.mixin(mixin)

Answer 2

Absolutely, it's completely doable. Vue mixins can assist with that.

Mixins serve as a versatile method for distributing reusable functionalities among Vue components. A mixin object can encompass any component options. When a component utilizes a mixin, all options within the mixin will be seamlessly integrated into the component’s own options.

Note that utilizing the mounted hook is recommended if you need to monitor when the component is added to the DOM.

This function is invoked after the instance has been mounted, where el is substituted by the freshly created vm.$el. If the root instance is being mounted to an in-document element, vm.$el will also be in-document upon mount.

mixin.js:

export default {
  data() {
    return {
      loading: true
    }
  },
  mounted() {
    console.log('I have been mounted')
    this.loading = false
  }
}

Subsequently, globally register that mixin so it becomes accessible in all components:

import mixin from './mixin'

Vue.mixin(mixin)

Methods for identifying when a Vue component has been updated based on property change

Answer №1

Similar questions

Display a modal pop-up containing HTML content

Transferring data between a ComponentPortal within an Angular CDK

Example TypeScript code: Use the following function in Angular 5 to calculate the total by summing up the subtotals. This function multiplies the price by the quantity

It is important to ensure that the user returned by the onAuthStateChanged function in

Generate a base64 encoded string from a file and send it as a response using an ASP.NET httpHandler after receiving an AJAX request

What could be the reason for my Node.js Express response coming back as empty?

Is there a way to stop all currently running JavaScript functions when a Vue component is being destroyed?

Guide to generating a fresh array by using a third array as a reference point?

Error Message Missing from Google Cloud Function Response

Rendering deeply nested data in a Vue table

Compiling SCSS to CSS in Vue.js is a breeze

Inconsistencies with AJAX performance

When the first element of an array is undefined, Angular's ngFor will not render anything

button that takes you back to the top of a mobile website

JavaScript: Utilizing variable identifiers to invoke functions

discord.js embed message not displaying text correctly in Upper and Lower case

Require assistance with handling Ajax when a function with an Ajax call is repeatedly invoked

Show information according to the user's input

Retrieving information from a text document by means of data-src with the assistance of jQuery

ESLint has encountered an error: Expected method shorthand (object shorthand) is missing