slot-scope 插槽 的使用 ——'<template slot-scope="page">'

slot-scope="page"
slot-scope 是一个插槽,拿外面的数据,可以获取当前一行的数据
page.row.pageId 拿到当前行数据的pageId
注意:
slot-scope="A"  @click="edit(B.row.pageId)
A和B需要保持一致

 <el-table-column label="操作" width="300">
         <template slot-scope="page">
           <el-button
             size="small" type="text"
             @click="edit(page.row.pageId)">编辑
           </el-button>
           <el-button
             size="small" type="text"
             @click="del(page.row.pageId)">删除
           </el-button>
           <el-button
             @click="preview(page.row.pageId)"
             type="text"
             size="small">页面预览
           </el-button>
           <el-button
             size="small" type="primary" plain @click="postPage(page.row.pageId)">发布
           </el-button>
         </template>
       </el-table-column>