Cara melaksanakan penapisan dinamik dan menyusun carta statistik di bawah rangka kerja Vue

const data = [
  { category: 'A', value: 10 },
  { category: 'B', value: 20 },
  { category: 'C', value: 30 },
  { category: 'D', value: 40 },
  // ...
];

<template>
  <div>
    <input type="text" v-model="keyword" placeholder="输入关键字筛选">
    <select v-model="selectedCategory">
      <option value="">全部类别</option>
      <option v-for="category in categories" :value="category">{{ category }}</option>
    </select>
    <ul>
      <li v-for="item in filteredData" :key="item.category">
        {{ item.category }}: {{ item.value }}
      </li>
    </ul>
  </div>
</template>

<script>
export default {
  data() {
    return {
      keyword: '',
      selectedCategory: '',
      data: [
        { category: 'A', value: 10 },
        { category: 'B', value: 20 },
        { category: 'C', value: 30 },
        { category: 'D', value: 40 },
        // ...
      ]
    }
  },
  computed: {
    categories() {
      // 获取所有的类别列表
      const categories = new Set();
      this.data.forEach(item => {
        categories.add(item.category);
      });
      return Array.from(categories);
    },
    filteredData() {
      // 根据筛选条件过滤数据
      return this.data.filter(item => {
        return (item.category.includes(this.keyword) || item.value.includes(this.keyword)) &&
          (this.selectedCategory === '' || item.category === this.selectedCategory);
      });
    }
  }
}
</script>

<template>
  <div>
    <select v-model="sortKey">
      <option value="">不排序</option>
      <option v-for="key in sortKeys" :value="key">{{ key }}</option>
    </select>
    <ul>
      <li v-for="item in sortedData" :key="item.category">
        {{ item.category }}: {{ item.value }}
      </li>
    </ul>
  </div>
</template>

<script>
export default {
  data() {
    return {
      sortKey: '',
      data: [
        { category: 'A', value: 10 },
        { category: 'B', value: 20 },
        { category: 'C', value: 30 },
        { category: 'D', value: 40 },
        // ...
      ]
    }
  },
  computed: {
    sortKeys() {
      // 获取可排序的属性列表
      return Object.keys(this.data[0]);
    },
    sortedData() {
      // 根据排序条件对数据进行排序
      if (!this.sortKey) {
        return this.data;
      }
      return this.data.slice(0).sort((a, b) => {
        if (a[this.sortKey] > b[this.sortKey]) {
          return 1;
        }
        if (a[this.sortKey] < b[this.sortKey]) {
          return -1;
        }
        return 0;
      });
    }
  }
}
</script>