如何在 Vue3 中渲染多个插槽?
How to render multiple slots in Vue3?
如何使用 h()
函数在 Vue3 setup()
函数中呈现以下模板?
<label v-for="service in services" :key="service">
<slot name="before" :service="service"></slot>
foobar
<slot name="after" :service="service"></slot>
</label>
// @returns {VNode}
h(
// {String | Object | Function } tag
// An HTML tag name, a component or an async component.
// Using function returning null would render a comment.
//
// Required.
'div',
// {Object} props
// An object corresponding to the attributes, props and events
// we would use in a template.
//
// Optional.
{},
// {String | Array | Object} children
// Children VNodes, built using `h()`,
// or using strings to get 'text VNodes' or
// an object with slots.
//
// Optional.
[
'Some text comes first.',
h('h1', 'A headline'),
h(MyComponent, {
someProp: 'foobar'
})
]
)
组件的setup()
arguments are below. setup()
can also return a render function(returns一个VNode
来自h()
的函数):
setup(
// {Object} Component prop values
props,
// {Object} Contains `attrs`, `emit`, and `slots`
context
)
上下文的 slots
属性 包含每个给定槽的函数。这些函数接收作为 props 传递给插槽的参数,并且每个函数 returns 对应插槽的 VNode
。例如,要获取 before
插槽的 VNode
并传递 service
的插槽属性,请调用 context.slots.before({ service: 'myService' })
.
因此,您的模板的等效呈现函数类似于以下内容:
import { h } from 'vue'
export default {
props: {
services: {
type: Array,
default: () => [],
},
},
setup({ services }, { slots }) {
return () =>
services.map((service) =>
h( //
'label', //
{ // <label :key="service">
key: service, //
}, //
[
slots.before({ service }), // <slot name="before" :service="service" />
'foobar', // foobar
slots.after({ service }) // <slot name="after" :service="service" />
]
) // </label>
)
},
}
如何使用 h()
函数在 Vue3 setup()
函数中呈现以下模板?
<label v-for="service in services" :key="service">
<slot name="before" :service="service"></slot>
foobar
<slot name="after" :service="service"></slot>
</label>
// @returns {VNode}
h(
// {String | Object | Function } tag
// An HTML tag name, a component or an async component.
// Using function returning null would render a comment.
//
// Required.
'div',
// {Object} props
// An object corresponding to the attributes, props and events
// we would use in a template.
//
// Optional.
{},
// {String | Array | Object} children
// Children VNodes, built using `h()`,
// or using strings to get 'text VNodes' or
// an object with slots.
//
// Optional.
[
'Some text comes first.',
h('h1', 'A headline'),
h(MyComponent, {
someProp: 'foobar'
})
]
)
组件的setup()
arguments are below. setup()
can also return a render function(returns一个VNode
来自h()
的函数):
setup(
// {Object} Component prop values
props,
// {Object} Contains `attrs`, `emit`, and `slots`
context
)
上下文的 slots
属性 包含每个给定槽的函数。这些函数接收作为 props 传递给插槽的参数,并且每个函数 returns 对应插槽的 VNode
。例如,要获取 before
插槽的 VNode
并传递 service
的插槽属性,请调用 context.slots.before({ service: 'myService' })
.
因此,您的模板的等效呈现函数类似于以下内容:
import { h } from 'vue'
export default {
props: {
services: {
type: Array,
default: () => [],
},
},
setup({ services }, { slots }) {
return () =>
services.map((service) =>
h( //
'label', //
{ // <label :key="service">
key: service, //
}, //
[
slots.before({ service }), // <slot name="before" :service="service" />
'foobar', // foobar
slots.after({ service }) // <slot name="after" :service="service" />
]
) // </label>
)
},
}