vue使用自定义指令实现按钮权限展示功能

import hasBtn from './permission/hasBtn'
const install = function (Vue) {
      Vue.directive('hasBtn', hasBtn)
}
if (window.Vue) {
      window['hasBtn'] = hasBtn
      Vue.use(install); // eslint-disable-line
}
export default install
 

export default {
      inserted(el, binding, vnode) {
            
            const { value } = binding
            
            const btn_permission = value;
            
            const permissions = JSON.parse(sessionStorage.getItem('btnarr'))
            
            var hasPermissions = permissions.some(permission => {
                  return btn_permission == permission.menuId
            })
            
            if (!hasPermissions) {
                  el.parentNode && el.parentNode.removeChild(el)
            }
      }
}

<el-button  v-hasBtn="15" type="primary" icon="el-icon-plus" size="mini" @click="addRelease">新增</el-button>