vue全局自定义指令注册

/*
 * @Author: 周云芳
 * @Date: 2022-06-28 15:21:41
 * @LastEditors: 周云芳
 * @LastEditTime: 2022-06-28 16:44:16
 * @Description: 用于自动注册全局自定义指令
 * 使用规则:
 * 根据导出的name在页面使用如directives对象中的name为el-drag-dialog,页面使用:v-el-drag-dialog
 */
const requireDirective = require.context('./', true, /\.js$/)
// 自定义指令
let directives = {}
requireDirective.keys().map((file) => {
  // console.log('file', file)
  const name = removerLastIndex(file)
  if (name) {
    directives = {
      ...directives,
      [name]: requireDirective(file).default
    }
  }
 
  return false
})
function removerLastIndex (str) {
  const start = str.substring(2, str.length) // 去除路径中的./ start=el-drag-dialog/index.js
  // str = login/index
  // 获取最后一个/的索引
  const index = start.lastIndexOf('/')
  // 获取最后一个/后面的值
  const val = start.substring(index + 1, start.length)
  // 判断是不是index结尾
  if (val === 'index.js') {
    return start.substring(index, -1)
  }
  return str
}
 
console.log('directives', directives)
export default {
  install (Vue) {
    Object.keys(directives).forEach((key) => {
      console.log('directives[key]', key, directives[key])
      Vue.directive(key, directives[key])
    })
  }
}

/*
 * @Author: 周云芳
 * @Date: 2022-06-28 15:11:03
 * @LastEditors: 周云芳
 * @LastEditTime: 2022-06-28 16:31:15
 * @Description: 自定义指令示例
 */
export default {
  inserted: function (el, binding) {
    el.addEventListener('click', () => {
      console.log('指令点点')
    })
  }
}

import Directive from '@/directive'
Vue.use(Directive)

<!--
 * @Author: 周云芳
 * @Date: 2022-06-28 09:18:44
 * @LastEditors: 周云芳
 * @LastEditTime: 2022-06-28 16:29:28
 * @Description: 文件描述
-->
<template>
  <div>
    测试
    <auto-test v-el-drag-dialog></auto-test>
  </div>
</template>
 
<script>
export default {
  name: 'test',
  props: [''],
  data () {
    return {}
  },
 
}
</script>
<style lang="" scoped></style>