Vue2向Vue3过度核心技术插槽2

<template>
  <div class="my-tag">
    <input
      v-if="isEdit"
      v-focus
      ref="inp"
      class="input"
      type="text"
      placeholder="输入标签" 
      @blur="isEdit = false" 
    />
    <div 
      v-else
      @dblclick="handleClick"
      class="text">
       茶具
    </div>
  </div>
</template>
<script>
export default {
  data () {
    return {
      isEdit: false
    }
  },
  methods: {
    handleClick () {
      this.isEdit = true
    }
  }
}
</script> 

// 封装全局指令 focus
Vue.directive('focus', {
  // 指令所在的dom元素，被插入到页面中时触发
  inserted (el) {
    el.focus()
  }
})

<MyTag v-model="tempText"></MyTag>
<script>
    export default {
        data(){
            tempText:'水杯'
        }
    }
</script>

<template>
  <div class="my-tag">
    <input
      v-if="isEdit"
      v-focus
      ref="inp"
      class="input"
      type="text"
      placeholder="输入标签"
      :value="value"
      @blur="isEdit = false"
      @keyup.enter="handleEnter"
    />
    <div 
      v-else
      @dblclick="handleClick"
      class="text">
      {{ value }}
    </div>
  </div>
</template>
<script>
export default {
  props: {
    value: String
  },
  data () {
    return {
      isEdit: false
    }
  },
  methods: {
    handleClick () {
      this.isEdit = true
    },
    handleEnter (e) {
      // 非空处理
      if (e.target.value.trim() === '') return alert('标签内容不能为空')
      this.$emit('input', e.target.value)
      // 提交完成，关闭输入状态
      this.isEdit = false
    }
  }
}
</script> 

<template>
  <div class="table-case">
    <MyTable :data="goods"></MyTable>
  </div>
</template>
<script>
import MyTable from './components/MyTable.vue'
export default {
  name: 'TableCase',
  components: { 
    MyTable
  },
  data(){
    return {
        ....
    }
  },
}
</script> 

<template>
  <table class="my-table">
    <thead>
      <tr>
        <th>编号</th>
        <th>名称</th>
        <th>图片</th>
        <th width="100px">标签</th>
      </tr>
    </thead>
    <tbody>
      <tr v-for="(item, index) in data" :key="item.id">
       <td>{{ index + 1 }}</td>
        <td>{{ item.name }}</td>
        <td>
          <img
            :src="item.picture"
          />
        </td>
        <td>
          标签内容
         <!-- <MyTag v-model="item.tag"></MyTag> -->
        </td>
      </tr>
    </tbody>
  </table>
</template>
<script>
export default {
  props: {
    data: {
      type: Array,
      required: true
    }
  }
};
</script>
<style lang="less" scoped>
.my-table {
  width: 100%;
  border-spacing: 0;
  img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    vertical-align: middle;
  }
  th {
    background: #f5f5f5;
    border-bottom: 2px solid #069;
  }
  td {
    border-bottom: 1px dashed #ccc;
  }
  td,
  th {
    text-align: center;
    padding: 10px;
    transition: all .5s;
    &.red {
      color: red;
    }
  }
  .none {
    height: 100px;
    line-height: 100px;
    color: #999;
  }
}
</style>

<template>
  <div class="table-case">
    <MyTable :data="goods">
      <template #head>
        <th>编号</th>
        <th>名称</th>
        <th>图片</th>
        <th width="100px">标签</th>
      </template>
      <template #body="{ item, index }">
        <td>{{ index + 1 }}</td>
        <td>{{ item.name }}</td>
        <td>
          <img
            :src="item.picture"
          />
        </td>
        <td>
          <MyTag v-model="item.tag"></MyTag>
        </td>
      </template>
    </MyTable>
  </div>
</template>
<script>
import MyTag from './components/MyTag.vue'
import MyTable from './components/MyTable.vue'
export default {
  name: 'TableCase',
  components: {
    MyTag,
    MyTable
  },
  data () {
    return {
      ....
  }
}
</script>

<template>
  <table class="my-table">
    <thead>
      <tr>
        <slot name="head"></slot>
      </tr>
    </thead>
    <tbody>
      <tr v-for="(item, index) in data" :key="item.id">
        <slot name="body" :item="item" :index="index" ></slot>
      </tr>
    </tbody>
  </table>
</template>
<script>
export default {
  props: {
    data: {
      type: Array,
      required: true
    }
  }
};
</script>