实例详解vue基于element-plus的组件二次封装

<template>
  <div class="base-input flex align-center">
    <div v-if="props.blockName">{{ props.blockName }}</div>
    <el-input placeholder="请输入" v-model="chanValue"></el-input>
  </div>
</template>
<script setup>
import { computed } from 'vue'
const props = defineProps({
  blockName: {
    type: String,
    default: ''
  },
  value: {
    type: String,
    default: ''
  }
})
const emits = defineEmits(['update:value'])
// 通过重写计算属性的set和get方法，将计算属性的结果绑定在输入框的model中
const chanValue = computed({
  get: () => props.value,
  set: (val) => {
    emits('update:value', val)
  }
})
</script>

<template>
  <div class="base-select flex align-center">
    <div>{{ props.blockName }}</div>
    <el-select 
      v-model="chanValue" 
      :multiple="props.multiple" 
      :filterable="props.filterable" 
      :allow-create="props.allowCreate"
      :placeholder="placeholder" 
     >
      <el-option v-for="item in props.options" :key="item.value" :value="item.value" :label="item.label" />
    </el-select>
  </div>
</template>
<script setup>
import { computed } from 'vue'
const props = defineProps({
  blockName: {
    type: String,
    default: ''
  },
  value: {
    type: String,
    default: ''
  },
  placeholder: {
    type: String,
    default: '请选择'
  },
  options: {
    type: Array,
    default() {
      return [{ value: '', label: '' }]
    }
  },
  // 一下三个属性配合多选使用
  multiple: {
    type: Boolean,
    default: false
  },
  filterable: {
    type: Boolean,
    default: false
  },
  allowCreate: {
    type: Boolean,
    default: false
  }
})
const chanValue = computed({
  get: () => props.value,
  set: (val) => {
    emits('update:value', val)
  }
})
const emits = defineEmits(['update:value'])
</script>

<BaseInput blockName="传入的label名称" v-model:value="双向绑定的数据" />
<BaseSelect blockName="传入的label名称" :options="选择器的选项值" v-model:value="双向绑定的数据" />

<template>
  <div>
    <el-dialog v-model="getShow" width="65%" :before-close="handlerCancer">
      <div>{{props.title}}</div>
      <slot/>
      <template #footer>
        <span>
          <button @click="handlerCancer">取消</button>
          <button @click="handlerSubmit">确定</button>
        </span>
      </template>
    </el-dialog>
  </div>
</template>
<script setup>
import { computed } from 'vue'
const props = defineProps({
  title: {
   type: String,
   default:''
  },
  isShow: {
    type: Boolean,
    default: false
  }
})
const emits = defineEmits(['update:isShow'])
const handlerCancer = () => {
  emits('update:isShow', false)
}
const handlerSubmit = () => {
  // dialog 点击确定按钮之前处理相关业务逻辑
  emits('update:isShow', false)
}
const getShow = computed({
  get: () => props.isShow,
  set: (val) => {
    emits('update:isShow', val)
  }
})
</script>

<BaseDialog title="传入的标题名称" v-model:isShow="isShow">
   <div>对应的插槽内容</div>
</BaseDialog>