Vue2.js：v-click-outside自定义指令和vue-click-outside监听鼠标点击元素外部区域事件

<template>
  <div class="TestClickOutside">
    <div
      class="TestClickOutside__inner"
      v-click-outside="handleClickOutside"
    ></div>
  </div>
</template>
<script>
// created at 2022-08-25
export default {
  name: 'TestClickOutside',
  props: {},
  components: {},
  data() {
    return {}
  },
  directives: {
    'click-outside': {
      bind(el, binding, vnode) {
        console.log('bind')
        function eventHandler(e) {
          if (el.contains(e.target)) {
            return false
          }
          // 如果绑定的参数是函数，正常情况也应该是函数，执行
          if (binding.value && typeof binding.value === 'function') {
            binding.value(e)
          }
        }
        // 用于销毁前注销事件监听
        el.__click_outside__ = eventHandler
        // 添加事件监听
        document.addEventListener('click', eventHandler)
      },
      unbind(el, binding, vnode) {
        console.log('unbind')
        // 移除事件监听
        document.removeEventListener('click', el.__click_outside__)
        // 删除无用属性
        delete el.__click_outside__
      },
    },
  },
  methods: {
    handleClickOutside() {
      console.log('handleClickOutside')
    },
  },
  created() {},
}
</script>
<style lang="less"></style>
<style lang="less" scoped>
.TestClickOutside__inner {
  width: 100px;
  height: 100px;
  background-color: #666666;
}
</style>

$ npm install vue-click-outside

<template>
  <div class="TestClickOutside">
    <div
      class="TestClickOutside__inner"
      v-click-outside="handleClickOutside"
    ></div>
  </div>
</template>
<script>
// created at 2022-08-25
import ClickOutside from 'vue-click-outside'
export default {
  name: 'TestClickOutside',
  props: {},
  components: {},
  data() {
    return {}
  },
  directives: { ClickOutside },
  computed: {},
  methods: {
    handleClickOutside() {
      console.log('handleClickOutside')
    },
  },
  created() {},
}
</script>
<style lang="less"></style>
<style lang="less" scoped>
.TestClickOutside__inner {
  width: 100px;
  height: 100px;
  background-color: #666666;
}
</style>