Vue.js 3.0 Tutorial

Vue.js 3.0 Component Advanced

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Vue.js 3.0 Reusable & Combinable

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Vue.js 3.0 Migrating from Vue2

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Vue.js 3.0 Style Guide

Vue 3.0 Style Guide

Vue 3.0 plugin

Plugins in Vue 3 are a powerful feature to extend the functionality of your application. Plugins can add global components, mixins, directives and more. They allow you to wrap and reuse functionality across multiple Vue instances or components.

Let's create a basic Vue 3 plugin. This plugin will add a method that can be accessed globally throughout the application:

// myPlugin.js

export default {
  install(app, options) {
    app.config.globalProperties.$myMethod = function () {
      console.log('This is a Vue 3 plugin!');
    }
  }
}

In this example, the install function is the key. When Vue uses this plugin, it will call install and pass in the app instance and options. You can use the app instance to add global properties, directives, components, etc.

Now, let's use the plugin in a Vue 3 app:

// main.js

import { createApp } from 'vue';
import App from './App.vue';
import MyPlugin from './myPlugin.js';

const app = createApp(App);

app.use(MyPlugin);

app.mount('#app');

In your Vue components, you can now use $myMethod like this:

<template>
  <button @click="$myMethod">Call Plugin Method</button>
</template>

When you click the button, it should log "This is a Vue 3 plugin!" to the console.

This is a simple example, but plugins can do much more. They can add new functionality to Vue, integrate third-party libraries, or provide a set of utilities. They're a key part of Vue's flexibility and power.

Registering Plugins in Vue 3.0:

// myPlugin.js
export const myPlugin = {
  install(app) {
    app.config.globalProperties.$myMethod = () => {
      console.log('Hello from myPlugin!');
    };
  },
};

// main.js
import { createApp } from 'vue';
import App from './App.vue';
import { myPlugin } from './myPlugin';

const app = createApp(App);
app.use(myPlugin);
app.mount('#app');

Vue 3.0 Global Plugins vs. Component-Specific Plugins:

Differentiate between global and component-specific plugin usage.

// Global Plugin
app.use(myGlobalPlugin);

// Component-Specific Plugin
export default {
  mounted() {
    this.$myMethod(); // Accessing the plugin method in a component
  },
};

Using Third-Party Plugins in Vue 3.0:

Install and use a third-party plugin, e.g., Vue Router.

npm install vue-router

// main.js
import { createApp } from 'vue';
import App from './App.vue';
import { createRouter, createWebHistory } from 'vue-router';

const app = createApp(App);
const router = createRouter({
  history: createWebHistory(),
  routes: [...],
});

app.use(router);
app.mount('#app');

Vue 3.0 Plugin Options and Configuration:

Pass options to a plugin during registration.

// myPlugin.js
export const myPlugin = {
  install(app, options) {
    console.log('Plugin Options:', options);
  },
};

// main.js
import { createApp } from 'vue';
import App from './App.vue';
import { myPlugin } from './myPlugin';

const app = createApp(App);
app.use(myPlugin, { option1: 'value1', option2: 'value2' });
app.mount('#app');

Vue 3.0 Plugin Lifecycle Hooks:

Utilize lifecycle hooks in a custom plugin.

export const myPlugin = {
  install(app) {
    app.config.globalProperties.$myMethod = () => {
      console.log('Hello from myPlugin!');
    };

    app.mixin({
      created() {
        console.log('Mixin Created');
      },
    });

    app.provide('myValue', 'This is my value');
  },
};

Developing Custom Plugins for Vue 3.0:

Create a custom plugin with methods and mixins.

// myCustomPlugin.js
export const myCustomPlugin = {
  install(app) {
    app.config.globalProperties.$customMethod = () => {
      console.log('Hello from custom method!');
    };

    app.mixin({
      created() {
        console.log('Mixin Created');
      },
    });
  },
};

// main.js
import { createApp } from 'vue';
import App from './App.vue';
import { myCustomPlugin } from './myCustomPlugin';

const app = createApp(App);
app.use(myCustomPlugin);
app.mount('#app');

Vue 3.0 Plugins and Component Mixins:

Mix in functionality to components using plugins.

// myMixinPlugin.js
export const myMixinPlugin = {
  install(app) {
    app.mixin({
      created() {
        console.log('Mixin Created');
        this.$myMixinMethod();
      },
      methods: {
        $myMixinMethod() {
          console.log('Hello from mixin method!');
        },
      },
    });
  },
};

Vue 3.0 Plugins for Routing (e.g., vue-router):

Use Vue Router as a plugin for routing.

// main.js
import { createApp } from 'vue';
import App from './App.vue';
import { createRouter, createWebHistory } from 'vue-router';
import routes from './routes';

const app = createApp(App);
const router = createRouter({
  history: createWebHistory(),
  routes,
});

app.use(router);
app.mount('#app');

Vue 3.0 Plugins for State Management (e.g., Vuex):

Use Vuex as a plugin for state management.

// main.js
import { createApp } from 'vue';
import App from './App.vue';
import { createStore } from 'vuex';
import myModule from './store/myModule';

const app = createApp(App);
const store = createStore({
  modules: {
    myModule,
  },
});

app.use(store);
app.mount('#app');

Vue 3.0 Plugins for Form Validation:

Integrate a form validation library as a plugin.

// main.js
import { createApp } from 'vue';
import App from './App.vue';
import { createI18n } from 'vue-i18n';
import validationPlugin from 'vue3-form-validation-plugin';

const app = createApp(App);
const i18n = createI18n({
  locale: 'en',
  messages: {
    en: {
      validation: {
        required: 'This field is required.',
        // Add more validation messages...
      },
    },
    // Add more locales...
  },
});

app.use(validationPlugin, { i18n });
app.use(i18n);
app.mount('#app');

Vue 3.0 Plugins for Internationalization (i18n):

Incorporate an i18n library as a plugin.

// main.js
import { createApp } from 'vue';
import App from './App.vue';
import { createI18n } from 'vue-i18n';

const app = createApp(App);
const i18n = createI18n({
  locale: 'en',
  messages: {
    en: {
      welcome: 'Welcome!',
      // Add more translations...
    },
    // Add more locales...
  },
});

app.use(i18n);
app.mount('#app');