vue3引用外部插件报错 Vue.component is not a function
时间: 2023-05-31 14:05:59 浏览: 449
如果在Vue 3中使用Vue.component()来引用外部插件,会出现“Vue.component is not a function”错误。这是因为Vue 3中已经取消了Vue.component()方法,而是采用了新的API注册组件。
要解决这个问题,可以使用Vue 3中的createApp()方法来创建Vue应用程序实例,并使用其component()方法注册组件。
例如,假设我们有一个名为HelloWorld的组件,它保存在一个名为HelloWorld.vue的文件中。要在Vue 3中引用该组件,可以执行以下操作:
1. 导入Vue模块和HelloWorld组件:
import { createApp } from 'vue'
import HelloWorld from './HelloWorld.vue'
2. 创建Vue应用程序实例:
const app = createApp({})
3. 使用component()方法注册HelloWorld组件:
app.component('hello-world', HelloWorld)
4. 将Vue应用程序实例挂载到DOM元素上:
app.mount('#app')
这样,就可以在Vue 3中成功引用外部插件了。
相关问题
app.component is not a function
I apologize for the confusion. In UniApp, the `app.component` method is not available for registering global components in Vue 3. Instead, you can use the `createApp` function provided by Vue 3 to create your app instance and register global components.
Here's an example of how you can register a global component in UniApp using Vue 3:
1. Create your component file, e.g., `MyComponent.vue`, in the `components` directory.
2. In your `App.vue` file, import the `createApp` function and your component, and register the component using the `component` method:
```vue
<template>
<view>
<my-component></my-component>
</view>
</template>
<script>
import { createApp } from 'vue'
import MyComponent from '@/components/MyComponent.vue'
export default {
created() {
const app = createApp({})
app.component('my-component', MyComponent)
app.mount('#app')
}
}
</script>
```
Make sure you have the necessary setup to mount your app using `app.mount` with the appropriate element ID (`#app` in this example).
This way, your component will be registered globally, and you can use it in any page of your UniApp project.
I apologize for any confusion caused by my previous response. I hope this clears up the confusion. If you have any further questions, please let me know!
this.axios is not a function at VueComponent.
这个错误可能是因为你在 Vue 组件中使用了 axios,但是没有正确引入 axios 库或者没有在 Vue 实例中注册 axios。请确保你已经正确引入了 axios 库,并且在 Vue 实例中进行了注册。你可以在 main.js 或者 App.vue 文件中进行注册:
```javascript
import Vue from 'vue'
import axios from 'axios'
Vue.prototype.$http = axios
```
这样你就可以在 Vue 组件中使用 axios,例如:
```javascript
export default {
mounted() {
this.$http.get('/api/data').then(response => {
console.log(response.data)
})
}
}
```