Vue is a open source JavaScript framework for building user interfaces and single page applications. Vue was created by Evan You in 2014 after working for google using AngularJS. It works with HML, CSS, and JavaScript, providing a component-based to build interfaces no matter the complexity.

import { createApp, ref } from 'vue'

createApp({
  setup() {
    return {
      count: ref(0)
    }
  }
}).mount('#app')
template
<div id="app">
  <button @click="count++">
    Count is: {{ count }}
  </button>
</div>

The result: count is 0;

Vue has a rich ecosystem that has many tools, libraries, and resources, making is easier and more efficient.

Vue has key features that include: reactivity, declarative rendering, components, single-file components, and flexibility.
Reactivity
Vue uses a data binding system that automatically updates the user interface when the data changes.

Declarative rendering
Vue uses an easy and very powerful templating system that lets you see how the user interface would look based on the current state of your data.

Single-file Components
Single-file Components are a special feature that allows you to define an entire component in one file. This file has the extension .vue and will have parts of a Vue component which are HTML, CSS, and JavaScript. They are separated into different sections within the same file to make it easy to control the components.
The structure will have a template, script, and style. Template contains the component's HTML. Script contains data, methods, and properties. Style contains scoped CSS for the component. All these features make it easy to manage and maintain complicated applications.

<script setup>
import { ref } from 'vue'
const count = ref(0)
</script>

<template>
  <button @click="count++">Count is: {{ count }}</button>
</template>

<style scoped>
button {
  font-weight: bold;
}
</style>

Flexibility
Vue is designed to be flexible to allow you to use many project whether its a small website or business application.
Component-Based architecture breaks down more difficult user interfaces into smaller, reusable pieces. Virtual DOM has efficient rendering that minimizes unnecessary DOM updates. Two-Way data binding will sync data between the model and user interface.

The options API and composition API are two different ways to write code in Vue.

Options API is the traditional way to write Vue component where it organizes and divide the components into options like data, methods, computed, watch, props. It gets harder to manage the options as the component grows.

export default {
  data() {
    return {
      message: 'Hello, Vue!'
    };
  },
  methods: {
    changeMessage() {
      this.message = 'Message changed!';
    }
  }
};

The Composition API that was introduced in Vue 3 gives you a more flexible way to organize logic. You can group similar code together instead of separating it into options like in the Options API.
You can reuse logic across components by creating reusable functions. It does require more more knowledge and may be challenging to understand for new users of Vue.

import { ref } from 'vue';

export default {
  setup() {
    const message = ref('Hello, Vue!');

    const changeMessage = () => {
      message.value = 'Message changed!';
    };

    return {
      message,
      changeMessage
    };
  }
};

Conclusion
Vue is a great choice for developers looking to build dynamic, interactive web applications. Its powerful features like reactivity and component-based architecture make it choice among other JavaScript frameworks. Vue can offer an efficient approach to building complex web apps to make it enjoyable.

Sources

Author Of article : Whitley Legard Antoine Read full article