Register a component with app.component("name", { ... }) and use it as a custom tag.
- Each component has its own
data(), so every instance has independent state. - The
templateoption holds the component's HTML.
Vue Components
Reusable building blocks.
✍️ 3 exercises + code challenge in this lessonKey Takeaways: Vue Components
Mastering Vue Components helps you write clean and reliable Vue.js code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
Vue Components Code Example
Vue.js<script src="https://unpkg.com/vue@3.5.12/dist/vue.global.prod.js"></script>
<div id="app">
<like-button></like-button>
<like-button></like-button>
</div>
<script>
const app = Vue.createApp({});
app.component("like-button", {
data() { return { likes: 0 }; },
template: `<button @click="likes++">👍 {{ likes }}</button>`
});
app.mount("#app");
</script>
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Vue Components Practice Exercises
Check what you learned in “Vue Components”.
/ 3 solved
Fill in the blank
Register a global component.
app.("my-card", { template: "<div>Card</div>" });
✓ Correct!
Not quite. Try again.
Multiple choice
Do two instances of the same component share their data()?
✓ Correct!
Not quite. Try again.
Code challenge
Register a component "hello-box" with the template <p class="hello">Hello!</p> and use it twice.
Write the code in the live editor. Your answer is checked automatically.
✓ Solved
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