Mastering Vue.js Essentials: Components, Props & Slots

Unlock the Power of Vue.js Components

Getting Started with Vue.js, Vue CLI, and Bootstrap CSS

To begin our journey, let’s set up our project by installing Vue.js, Vue CLI, and Bootstrap CSS. Run the following commands to get started:


npm install vue
npm install -g @vue/cli
vue create bookapp
cd bookapp
npm install bootstrap-vue


Next, let’s import Bootstrap CSS in our main.js file:

“`javascript
import Vue from ‘vue’
import { BootstrapVue } from ‘bootstrap-vue’
import App from ‘./App.vue’

Vue.use(BootstrapVue)

new Vue({
render: h => h(App),
}).$mount(‘#app’)
“`

What are Components?

Components are the building blocks of Vue.js applications. They’re self-contained pieces of code that can be reused throughout your project. According to Sarah Drasner, “Components are a collection of elements that are encapsulated into a group that can be accessed through a single element.” They help us write cleaner, more maintainable code by allowing us to reuse functionality without duplicating effort.

Props: The Key to Dynamic Data Binding

Props (short for “properties”) are openings within a component that can be filled with data. They enable us to pass data from a parent component to a child component, making our code more dynamic and flexible. In our example project, we’ll create a BookList component that imports a BookCard component. We’ll use props to pass book data from the parent component to the child component.

Creating a Reusable BookCard Component

Let’s create a BookCard component that accepts a bookData prop. We’ll define the prop with a type and required properties for validation.

“`html

“`

Passing Data from Parent to Child

Now, let’s pass the book data from the BookList component to the BookCard component using props.

“`html

“`

What are Slots?

Slots are another way to pass data from a parent component to a child component. Unlike props, slots can accept not only data but also markup or other components. This gives us more control over how the data is rendered.

Using Slots to Add a Button

Let’s add a button to our BookCard component using a slot.

html
<template>
<div>
<h2>{{ bookData.title }}</h2>
<p>{{ bookData.author }}</p>
<slot></slot>
</div>
</template>


Now, we can pass a button from the BookList component to the BookCard component using the slot.

html
<template>
<div>
<book-card v-for="book in books" :key="book.id" :book-data="book">
<button>View More</button>
</book-card>
</div>
</template>


Named Slots and Scoped Slots

We can also use named slots to pass multiple pieces of data from a parent component to a child component. Additionally, scoped slots allow us to pass data from the child component back to the parent component.

Experience the Power of Vue.js Components

By using props and slots, we can create reusable, dynamic components that make our code more maintainable and efficient. Try out LogRocket, a powerful tool for monitoring and tracking Vue.js applications, to take your development to the next level.