亚洲国产日韩欧美一区二区三区,精品亚洲国产成人av在线,国产99视频精品免视看7,99国产精品久久久久久久成人热,欧美日韩亚洲国产综合乱

Before you can register anything globally, you need the component itself. Let's say you're creating a simple reusable BaseButton.vue component:

 <template>
  <button class="base-button">
    {{ label }}
  </button>
</template>

<script>
export default {
  props: {
    label: {
      type: String,
      required: true
    }
  }
}
</script>

Put this file in a common directory like components/base/ . Once created, you're ready to register it globally.

In Vue 2: Use Vue.component()

In Vue 2, registering a global component is straightforward. You just call Vue.component() before creating your app instance.

In your main entry file (usually main.js ):

 import Vue from 'vue'
import BaseButton from './components/base/BaseButton.vue'

Vue.component('BaseButton', BaseButton)

new Vue({
  // ...your app options
}).$mount('#app')

Now you can use <BaseButton> anywhere in your app without importing or registering it locally.

Note: Global components are convenient but be careful not to overuse them. If a component is only used in one place, better to keep it local for clarity and performance.

In Vue 3 (Options API): Use app.component()

If you're using Vue 3 with the Options API, the syntax changes slightly because Vue 3 uses an app instance instead of a global constructor.

In main.js or main.ts :

 import { createApp } from 'vue'
import BaseButton from './components/base/BaseButton.vue'
import App from './App.vue'

const app = createApp(App)
app.component('BaseButton', BaseButton)
app.mount('#app')

This registers BaseButton globally and makes it available anywhere inside your Vue app.

You can also split this into a separate file if you have many global components—some people create a globalComponents.js and import all components there before registering them.

In Vue 3 (Composition API <script setup> ): Still Register Globally Like Before

Even if you're using <script setup> , the way to register a global component doesn't change. The difference is mainly in how you write the component itself.

For example, your BaseButton.vue could look like this:

 <template>
  <button class="base-button">
    {{ label }}
  </button>
</template>

<script setup>
defineProps({
  label: {
    type: String,
    required: true
  }
})
</script>

But in main.js , you still register it the same way as above using app.component() .

One thing to note: even though <script setup> simplifies writing components, it doesn't affect how registration works. So global registration stays consistent regardless of how you define the component internally.

So yeah, registering a global component in Vue isn't complicated once you know where to do it and how the syntax differs between Vue 2 and Vue 3. Just make sure to import your component first, then register it at the app level—and avoid making everything global unless it really needs to be.

基本上就這些。

以上是如何在VUE中註冊(cè)全局組件？的詳細(xì)內(nèi)容。更多資訊請(qǐng)關(guān)注PHP中文網(wǎng)其他相關(guān)文章！