vue3 defineProps
时间: 2023-10-01 19:02:08 浏览: 41
In Vue 3, defineProps is a function that can be used in the setup() function of a component to define the props that the component accepts. It takes an object as its argument, with each key representing a prop name and its value representing the prop's type or default value.
For example:
```
import { defineProps } from 'vue'
export default {
props: {
message: String,
count: {
type: Number,
default: 0
}
},
setup(props) {
// use props.message and props.count here
}
}
```
can be rewritten using defineProps like this:
```
import { defineProps } from 'vue'
export default {
setup(props) {
const { message, count } = defineProps({
message: String,
count: {
type: Number,
default: 0
}
})
// use message and count here
}
}
```
This allows for a more concise and clear way of defining props in Vue 3 components.
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