Solved: adding a prototype on vue using nuxt

Vue.js is a progressive JavaScript framework that is used for building user interfaces. Alongside its main library for building powerful and sophisticated Single Page Applications, Vue.js also provides additional libraries such as vue-router, Vuex, Vue CLI, and more. One powerful library in the Vue.js ecosystem is Nuxt.js, which is a framework made for Vue.js that enables better code structure, server-side rendering, static site generation, powerful routing system and more. Now, implementing prototype in Vue using Nuxt is a significant aspect and that’s what this article will explore in depth.

Understanding Prototypes in JavaScript

In JavaScript, a prototype is an object from which other objects inherit properties. JavaScript’s prototype feature allows methods and properties to be shared across objects, reducing the memory usage and making the code more efficient. Let’s now take a look at how prototypes can be used within a Vue and Nuxt development context.

Integrating Prototypes with Vue and Nuxt

In order to add a prototype on Vue using Nuxt, we have two options. We can either add it to the Vue instance or add a prototype to the Nuxt’s global context.

// Adding to Vue instance
Vue.prototype.$myPrototype = 'Prototype';

// Adding to Nuxt context
export default ({ app }, inject) => {
  inject('myPrototype', 'Prototype');

The first method, adding to the Vue instance, allows the prototype to be visible in the Vue component context. You can access it inside methods, computed properties, lifecycle hooks, etc. using this.$myPrototype. The second method, using Nuxt.js inject, it introduces the prototype into the Nuxt.js context, Vue instance and Vuex store. So, besides being accessed as this.$myPrototype within component, it can also be accessed via context and store. Like context.$myPrototype and store.$myPrototype.

Step-by-step Implementation

Let’s write a piece of reusable code by adding to the Vue prototype property. Let’s say we are going to create a function that converts number into currency.

  • First, we’ll create a plugin. In your Nuxt project, inside the plugin folder, create a file named ‘format.js’.
  • Next, inside ‘format.js’, define your prototype as follows:
export default ({ app }, inject) => {
  inject('formatPrice', value => {
    return new Intl.NumberFormat('en-US', {
      style: 'currency',
      currency: 'USD'
  • After create the plugin, you have to let Nuxt know about it in your ‘nuxt.config.js’ file:
export default {
  plugins: ['~/plugins/format.js'],  

Now, you have a global function in your Nuxt application from Vue prototype, and you can call it anywhere in the application using this.$formatPrice(1000) — and will return $1,000.00.

Tips for Using Prototypes in Vue and Nuxt

Here are a few things to remember when using prototypes.

  • Avoid naming conflicts. Ensure the name of your prototype is unique and does not override existing properties.
  • Don’t overuse prototypes. It can be tempting to use prototypes for everything, but it’s important to remember that prototypes can make your code harder to understand and debug. So, use it wisely.

Overall, adding a prototype to your Vue application using Nuxt is a great way to make your code more efficient and reusable. It’s a powerful tool that, when used correctly, can increase your development efficiency.

Related posts:

Leave a Comment