vue快速入门（五十七）作用域插槽

注释很详细，直接上代码

新增内容
作用域插槽实现表格删除数据

源码

App.vue

<template><div id="app"><!-- 向子组件传值 --><MyTable :tableData="tableData"><!-- 接收子组件的传值，默认是对象格式，可以直接解构 --><template #default="obj"><button @click="del(obj.id)">移除</button></template>
</MyTable></div>
</template>
<script>
import MyTable from "./components/MyTable.vue";
export default {name: "App",components: {MyTable},data() {return {tableData: [{id:1,name:'张三',age:18,major:'计算机',score:90},{id:2,name:'李四',age:19,major:'计算机',score:80},{id:3,name:'王五',age:20,major:'计算机',score:70},{id:4,name:'赵六',age:21,major:'计算机',score:60},{id:5,name:'孙七',age:22,major:'计算机',score:50}],};},methods: {del(id){this.tableData = this.tableData.filter(item=>item.id !== id)}}
};
</script>
<style lang="less"></style>

MyTable.vue

<template><div id="Mytable"><table border="2"><thead><tr><th>ID</th><th>姓名</th><th>专业</th><th>评分</th><th>操作</th></tr></thead><tbody><tr v-for="item in tableData" :key="item.id"><td>{{item.id}}</td><td>{{item.name}}</td><td>{{item.major}}</td><td>{{item.score}}</td><td><!-- 定义插槽，并且向父组件传值 --><slot :id="item.id"></slot></td></tr></tbody></table></div>
</template><script>export default {// 接收父组件传递过来的数据props:['tableData']}
</script><style lang="less" scoped>
td,th{text-align: center;width: 100px;height: 30px;
}
</style>