All About Vue.js: A Guide to Vue.js Framework

All About Vue.js

1. What is Vue.js?
Vue.js is an open-source, progressive JavaScript framework used for building user
interfaces and single-page applications. It focuses on simplicity and flexibility,
making it suitable for both small and large-scale applications.

 Developed by Evan You.
 Combines features of Angular and React.
 Component-based and declarative.



2. Features of Vue.js
1. Reactivity System:
o Automatically updates the DOM when the underlying data changes.
2. Component-Based Architecture:
o Encapsulates logic, template, and style within components.
3. Two-Way Data Binding:
o Synchronizes the UI with the data model effortlessly.
4. Virtual DOM:
o Optimizes rendering performance.
5. Directives:
o Special tokens like v-bind, v-model to extend HTML functionality.
6. Vue CLI:
o Provides a powerful command-line interface to scaffold and manage
projects.



3. Setting Up a Vue.js Project
1. Using Vue CLI:
o Install Vue CLI globally.

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

2. Including Vue via CDN:
o Add Vue.js directly to an HTML file for simple projects.


<script src="https://unpkg.com/vue@3"></script>


4. Core Concepts of Vue.js
1. Vue Instance:
o The root of every Vue application.


const app = Vue.createApp({
data() {
return {
message: 'Hello, Vue.js!'
};
}
});
app.mount('#app');

2. Template Syntax:
o Use HTML-based syntax with Vue-specific directives.


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

3. Directives:
o Extend HTML capabilities.
o Examples:
 v-bind: Binds attributes.
 v-model: Creates two-way data binding.
 v-for: Loops through data.
 v-if: Conditional rendering.