In Vue.js, dynamic props are a way to pass data from a parent component to a child component. Understanding prop binding and type coercion is essential for effectively communicating between components. In this guide, we'll explore how to work with dynamic props, including prop binding and type coercion, and provide sample code to demonstrate the process.

Sample Code

Let's create a Vue.js application with a parent and a child component that use dynamic props:

<div id="app">
<parent-component :title="parentTitle" :initial-count="count" ></parent-component>
Vue.component('parent-component', {
props: {
title: String,
initialCount: Number
template: '<div><h2>{{ title }}</h2><child-component :count="initialCount"></child-component></div>'
Vue.component('child-component', {
props: {
count: Number
template: '<div>Child Count: {{ count }}</div>'
const app = new Vue({
el: '#app',
data: {
parentTitle: 'Parent Component',
count: 42

In this code:

  • We create a Vue component named `parent-component`, which receives dynamic props: `title` of type `String` and `initialCount` of type `Number`.
  • Inside the `parent-component`, we use these props to display the title and pass the `initialCount` as a prop to the `child-component`.
  • The `child-component` receives the `count` prop and displays it.
  • In the main Vue instance, we define data properties (`parentTitle` and `count`) and bind them to the props of the `parent-component`.