Understanding Props in Vue.js — Passing Data Between Components

Understanding Props in Vue.js

In Vue.js, props are the way to pass data from a parent component to a child component. This helps keep your app organized and allows reusable components to behave differently based on the data they receive.

Why Use Props?

• To keep components modular and maintainable
• To control the behavior and display of components dynamically

Example: Passing Props

<div id="app">
  <greeting-message name="VueNexus"></greeting-message>
</div>

<script>
  const app = Vue.createApp({});

  app.component('greeting-message', {
    props: ['name'],
    template: `<h2>Hello, {{ name }}!</h2>`
  });

  app.mount('#app');
</script>

Explanation:

The name prop is passed from the parent to the greeting-message component. Inside the component, we use {{ name }} to display it.

Best Practices:

• Use props to keep components flexible
• Validate props using props: { name: String } for better structure

Stay tuned for Day 10 where we'll explore emitting events from child to parent — the reverse of props!

Tags: #VueJS #VueProps #FrontendTips #VueForBeginners #VueNexus