<!DOCTYPE html>
<html lang='en'>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app">
<one>
<h1 slot="header">333333</h1>
</one>
</div>
</body>
</html>
<template id="one">
<div>
<slot name="header">默认内容2222</slot>
</div>
</template>
<script src="https://cdn.bootcdn.net/ajax/libs/vue/3.1.1/vue.cjs.js"></script>
<script>
Vue.component('one', {
template: '#one',
})
var vue = new Vue({
el: '#app',
})
</script>
父组件
<template>
<div class="about">
<h1>This is an about page</h1>
<hr>
<aboutCom ref="aboutCom">
<template v-slot:header>
<h1></h1>
</template>
</aboutCom>
</div>
</template>
<script>
import aboutCom from "../components/aboutCom.vue";
import aboutComChild from "../components/aboutComChild.vue";
export default {
components:{
aboutCom,
aboutComChild
},
}
</script>
子组件
<template>
<div>
<h2>这是about的子组件</h2>
<slot name="header">默认内容222222222</slot>
<hr>
<aboutComChild ref="aboutComChild"></aboutComChild>
</div>
</template>
<script>
import aboutComChild from "./aboutComChild.vue";
export default {
components:{
aboutComChild
},
}
</script>