VueJS分页不会更改数据

<template>
  <div>
    <ul>
      <li v-for="item in paginatedData" :key="item.id">{{ item.name }}</li>
    </ul>
    <div>
      <button @click="previousPage">上一页</button>
      <button @click="nextPage">下一页</button>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      currentPage: 1,
      pageSize: 10,
      data: [
        { id: 1, name: '数据1' },
        { id: 2, name: '数据2' },
        // 更多数据...
      ]
    };
  },
  computed: {
    paginatedData() {
      const startIndex = (this.currentPage - 1) * this.pageSize;
      const endIndex = startIndex + this.pageSize;
      return this.data.slice(startIndex, endIndex);
    }
  },
  methods: {
    previousPage() {
      if (this.currentPage > 1) {
        this.currentPage--;
      }
    },
    nextPage() {
      const totalPages = Math.ceil(this.data.length / this.pageSize);
      if (this.currentPage < totalPages) {
        this.currentPage++;
      }
    }
  }
};
</script>