/*
 * @Author: 周云芳
 * @Date: 2022-06-28 15:21:41
 * @LastEditors: 周云芳
 * @LastEditTime: 2022-06-28 16:44:16
 * @Description: 用于自動(dòng)注冊(cè)全局自定義指令
 * 使用規(guī)則:
 * 根據(jù)導(dǎo)出的name在頁(yè)面使用如directives對(duì)象中的name為el-drag-dialog,頁(yè)面使用:v-el-drag-dialog
 */
const requireDirective = require.context('./', true, /\.js$/)
// 自定義指令
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) // 去除路徑中的./ start=el-drag-dialog/index.js
  // str = login/index
  // 獲取最后一個(gè)/的索引
  const index = start.lastIndexOf('/')
  // 獲取最后一個(gè)/后面的值
  const val = start.substring(index + 1, start.length)
  // 判斷是不是index結(jié)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])
    })
  }
}

示例自定義指令頁(yè)面:

src\directive\el-drag-dialog\index.js

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

main.js引入

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

頁(yè)面用使用:

<!--
 * @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>
    測(cè)試
    <auto-test v-el-drag-dialog></auto-test>
  </div>
</template>
 
<script>
export default {
  name: 'test',
  props: [''],
  data () {
    return {}
  },
 
}
</script>
<style lang="" scoped></style>

效果: