vue3 template
时间: 2025-05-23 18:13:10 浏览: 20
### Vue3 Template Syntax and Usage
In Vue3, the template syntax has been refined to be more concise and powerful. For instance, when creating components with slots, developers can utilize a new shorthand `v-slot` directive or its abbreviated form `#`. The old way of using attributes like `slot="xxx"` and `slot-scope="scope"` is replaced by this unified approach which looks cleaner and offers better readability[^3].
To demonstrate how templates work within Vue3 projects created via Vue CLI (which involves setting up through global installations such as `@vue/cli`, among others)[^1], consider an example where one might want to pass data into child components:
```html
<!-- ParentComponent.vue -->
<template>
<ChildComponent v-slot:header="{ message }">
{{ message }}
</ChildComponent>
</template>
<script lang="ts">
import { defineComponent } from 'vue';
import ChildComponent from './ChildComponent.vue';
export default defineComponent({
name: "ParentComponent",
components: {
ChildComponent,
},
});
</script>
```
And here’s what the corresponding child component would look like:
```html
<!-- ChildComponent.vue -->
<template>
<slot name="header" :message="'Hello from Child'"></slot>
</template>
<script lang="ts">
import { defineComponent } from 'vue';
export default defineComponent({
name: "ChildComponent"
});
</script>
```
This setup allows for scoped slot props (`{ message }`) passed down from parent to child while adhering strictly to modern Vue3 practices.
For those familiar with earlier versions of Vue, it's worth noting that some changes have occurred regarding attribute bindings on `<template>` tags containing both custom directives and standard HTML attributes, leading potentially to errors if not handled correctly according to updated guidelines provided in official documentation[^2].
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