使用场景：复用子组件的slot，又可以使slot的内容不一样。
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8" />
<title>Vue</title>
</head>
<body>
<div id="app">
<my-component :books="books">
<template slot="book" slot-scope="props">
<li>{{props.bookName}}</li>
</template>
</my-component>
</div>
<script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script>
<script type="text/javascript">
Vue.component('my-component', {
template: ` <ul> <slot name="book" v-for="book in books" :book-name="book.name"><slot> </ul> `,
props: {
books: {
type: Array,
default: function() {
return [];
}
}
}
});
new Vue({
el: "#app",
data: {
books: [{
name: 'css'
}, {
name: 'js'
}, {
name: 'html'
}, ]
}
})
</script>
</body>
</html>