基于Vue自定义指令实现按钮级权限控制思路详解

path: '/permission',
  component: Layout,
  name: '权限测试',
  meta: { btnPermissions: ['admin','supper','normal'] }, //页面需要的权限
  children: [
   {
    path: 'supper',
    component: _import('system/supper'),
    name: '权限测试页',
    meta: { btnPermissions: ['admin','supper'] } //页面需要的权限
   },
   {
    path: 'normal',
    component: _import('system/normal'),
    name: '权限测试页',
    meta: { btnPermissions: ['admin'] } //页面需要的权限
   }
  ]

import Vue from 'vue'
/**权限指令**/
const has = Vue.directive('has', {
 bind: function (el, binding, vnode) {
  // 获取按钮权限
  let btnPermissions = vnode.context.$route.meta.btnPermissions.split(",");
  if (!Vue.prototype.$_has(btnPermissions)) {
   el.parentNode.removeChild(el);
  }
 }
});
// 权限检查方法
Vue.prototype.$_has = function (value) {
 let isExist = false;
 let btnPermissionsStr = sessionStorage.getItem("btnPermissions");
 if (btnPermissionsStr == undefined || btnPermissionsStr == null) {
  return false;
 }
 if (value.indexOf(btnPermissionsStr) > -1) {
  isExist = true;
 }
 return isExist;
};
export {has}

import has from './public/js/btnPermissions.js';

<el-button @click='editClick' type="primary" v-has>编辑</el-button>