Vue.js Basics Series

Welcome to the Vue.js Basics Series! Here, we will cover the fundamental concepts of Vue.js, a progressive JavaScript framework used for building user interfaces and single-page applications. This series is designed for beginners who want to learn Vue.js from scratch.

Introduction to Vue.js
Setting Up Vue.js
Basic Syntax
Components
Props and Events
State Management
Further Reading

Introduction to Vue.js

Vue.js is an open-source JavaScript framework created by Evan You. It is designed to be incrementally adoptable, making it easy to integrate with other libraries or existing projects. Vue.js is also known for its simplicity and ease of learning.

Setting Up Vue.js

Before you start building Vue.js applications, you need to set up the environment. You can do this by using Vue CLI, which is a command-line tool that generates the project structure and configuration files for you.

npm install -g @vue/cli
vue create my-vue-app
cd my-vue-app
npm run serve

Basic Syntax

Vue.js uses a template syntax that allows you to define the structure of your application's UI. Here's an example of a simple Vue.js template:

<div id="app">
  <h1>{{ message }}</h1>
</div>

In this example, {{ message }} is a Vue.js expression that outputs the value of the message data property.

Components

Vue.js components are reusable and encapsulated units of functionality. You can create your own components or use existing ones. Here's an example of a Vue.js component:

Vue.component('my-component', {
  template: '<div>Hello, Vue!</div>'
});

Props and Events

Vue.js components can communicate with each other through props and events. Props are used to pass data from parent to child components, while events are used to emit data from child to parent components.

// Parent component
this.$emit('custom-event', someData);

// Child component
this.$on('custom-event', function(data) {
  // Do something with data
});

State Management

For complex applications, Vue.js provides state management through Vuex. Vuex is a centralized store for all the components in your application, allowing you to manage and share the state.

import Vue from 'vue';
import Vuex from 'vuex';

Vue.use(Vuex);

export default new Vuex.Store({
  state: {
    count: 0
  },
  mutations: {
    increment(state) {
      state.count++;
    }
  },
  actions: {
    increment(context) {
      context.commit('increment');
    }
  }
});