Vue 3 brings a plethora of enhancements and new features that make it a powerhouse for modern web development. Here are 10 lesser-known but powerful Vue 3 features that can take your application to the next level:
1. Composition API
The Composition API offers a flexible way to organize and reuse code. It allows you to group related logic together, improving code readability and reusability.
2. Teleport
Teleport enables rendering components outside their parent DOM hierarchy. This is perfect for modals, notifications, or tooltips.
<teleport to="#modals"> <div class="modal">Hello, Vue 3!</div> </teleport>
3. Fragments
Vue 3 supports multiple root nodes in a component, allowing you to return adjacent elements without wrapping them in a single container.
<template> <h1>Header</h1> <p>Content</p> </template>
4. Suspense
Suspense lets you manage asynchronous components gracefully by providing fallback content while the main content loads.
<template>
<suspense>
<template #default>
<AsyncComponent />
</template>
<template #fallback>
<div>Loading...</div>
</template>
</suspense>
</template>
5. Emits Option
The emits option explicitly declares events emitted by a component, improving clarity and documentation.
export default {
emits: ['update'],
methods: {
notify() {
this.$emit('update', this.value);
},
},
};
6. Global API Changes
APIs like set, delete, and $mount are now part of an official global API. This simplifies code maintenance.
7. Better TypeScript Support
Vue 3 is designed with TypeScript in mind, offering type inference for props, events, and slots, making it a go-to choice for TS enthusiasts.
8. Custom Renderer API
Build custom renderers for platforms other than the DOM, such as native mobile or WebGL, with the Custom Renderer API.
9. Reactivity Improvements
Reactivity in Vue 3 is more performant, with reactive and ref APIs providing fine-grained reactivity management.
10. Tree Shaking
Vue 3’s architecture supports tree shaking, ensuring that unused code is excluded from the final bundle, reducing app size.