复选框组件封装

1.创建组件

xtx-checkbox.vue

<template>
  <div class="xtx-checkbox" @click="changeChecked()">
    <i v-if="checked" class="iconfont icon-checked"></i>
    <i v-else class="iconfont icon-unchecked"></i>
    <span v-if="$slots.default"><slot /></span>
  </div>
</template>
<script>
import { ref } from 'vue'
export default {
  name: 'XtxCheckbox',
  setup () {
    const checked = ref(false)
    const changeChecked = () => {
      checked.value = !checked.value
    }
    return { checked, changeChecked }
  }
}
</script>
<style scoped lang="less">
.xtx-checkbox {
  display: inline-block;
  margin-right: 2px;
  .icon-checked {
    color: @xtxColor;
    ~ span {
      color: @xtxColor;
    }
  }
  i {
    position: relative;
    top: 1px;
  }
  span {
    margin-left: 2px;
  }
}
</style>

2.实现双向绑定

vue3.0中v-model会拆解成 属性 modelValue 和 事件 update:modelValue

import { ref, watch } from 'vue'
// v-model  ====>  :modelValue  +   @update:modelValue
export default {
  name: 'XtxCheckbox',
  props: {
    modelValue: {
      type: Boolean,
      default: false
    }
  },
  setup (props, { emit }) {
    // const checked = ref(false)
    const changeChecked = () => {
      // checked.value = !checked.value
      emit('update:modelValue', !props.modelValue)
    }
    return { changeChecked }
  }
}

3.测试

Playground/index.vue

<div>
  <div @click="isAgree=!isAgree">创建二级类目</div>
      {{isAgree}}
  <xtx-checkbox v-model="isAgree">同意吗？</xtx-checkbox>
</div>
<script>
    setup () {
    const isAgree = ref(false)
    return { isAgree }
  }
</script>

4.在sort.vue中补充使用复选框组件

<template>
    <!-- 排序区域 -->
    <div class='sub-sort'>
      // 省略其他...
    <div class="check">
      <XtxCheckbox v-model="sortParams.inventory">仅显示有货商品</XtxCheckbox>
      <XtxCheckbox v-model="sortParams.onlyDiscount">仅显示特惠商品</XtxCheckbox>
    </div>
  </div>
</template>