基于Vue实现电商SKU组合算法问题

<div>SKU组合demo</div>
<div v-for="(v, i) in list" :key="i" class="mt-20">
 <b>{{ v.name }}：</b>
 <el-checkbox-group v-model="checkList[i].list">
 <el-checkbox v-for="(k, j) in v.list" :key="j" :label="k" />
 </el-checkbox-group>
</div>
<div class="mt-20">
 <el-button type="primary" @click="handleClick">确定</el-button>
</div>
<div class="mt-20">
 <el-tag v-for="(item, index) in skuList" :key="index" style="margin:10px 10px;">{{ item }}</el-tag>
</div>

.mt-20 {
 margin-top: 20px;
}

<script>
export default {
 data() {
 return {
  list: [
  { name: '尺码', list: ['S', 'M', 'L', 'XL', 'XXL'] },
  { name: '颜色', list: ['红色', '黄色', '蓝色', '粉色', '紫色'] },
  { name: '图案', list: ['猫咪', '人物', '飞机', '闪电', '字母'] }
  ],
  checkList: [
  { name: '尺码', list: [] },
  { name: '颜色', list: [] },
  { name: '图案', list: [] }
  ],
  skuArray: [],
  skuList: []
 }
 },
 methods: {
 handleClick() {
  // 先清空数据，保证连续点击按钮，数据不会重复
  this.skuArray = []
  this.skuList = []
  // 将选中的规格组合成一个大数组 [[1, 2], [a, b]...]
  this.checkList.forEach(element => {
  element.list.length > 0 ? this.skuArray.push(element.list) : ''
  })
  // 勾选了规格，才调用方法
  if (this.skuArray.length > 0) {
  this.getSkuData([], 0, this.skuArray)
  } else {
  this.$message.error('请先勾选规格')
  }
 },
 // 递归获取每条SKU数据
 getSkuData(skuArr = [], i, list) {
  for (let j = 0; j < list[i].length; j++) {
  if (i < list.length - 1) {
   skuArr[i] = list[i][j]
   this.getSkuData(skuArr, i + 1, list) // 递归循环
  } else {
   this.skuList.push([...skuArr, list[i][j]]) // 扩展运算符，连接两个数组
  }
  }
 }
 }
}
</script>