<script> let v = new Vue({ el: '#app', data: { value1: '', value2: '', pickerOptions: { shortcuts: [{ text: '今天', onClick(picker) { picker.$emit('pick', new Date()); } }, { text: '昨天', onClick(picker) { const date = new Date(); date.setTime(date.getTime() - 3600 * 1000 * 24); picker.$emit('pick', date); } }, { text: '一周前', onClick(picker) { const date = new Date(); date.setTime(date.getTime() - 3600 * 1000 * 24 * 7); picker.$emit('pick', date); } }] }, tableData: [ { number: '1', date: '2021-08-01' }, { number: '2', date: '2021-08-01' }, { number: '3', date: '2021-08-01' }, { number: '4', date: '2021-08-01' }, { number: '5', date: '2021-08-01' }, { number: '6', date: '2021-08-01' }, { number: '7', date: '2021-08-01' }, { number: '8', date: '2021-08-01' } ], currentPage1: 5, currentPage2: 5, currentPage3: 5, currentPage4: 4 }, methods: { deleteRow(index, rows) { rows.splice(index, 1); }, handleSizeChange(val) { console.log(每页 ${val} 条); }, handleCurrentChange(val) { console.log(当前页: ${val}); }, }, function toggleContent() { var content = document.getElementById("content"); var btn = document.getElementById("toggle-btn"); if (content.style.height === "100px") { content.style.height = "auto"; btn.innerHTML = "收起"; } else { content.style.height = "100px"; btn.innerHTML = "展开"; } } }); </script>有什么错误

这段代码存在一些语法错误。具体来说：

1. `console.log` 方法中的字符串应该使用引号括起来，例如 `"每页 ${val} 条"` 和 `"当前页: ${val}"`。
2. `toggleContent` 方法应该定义在 `methods` 对象中，并且缺少一个左大括号 `{`。
3. `toggleContent` 方法中的 `console.log` 方法没有使用正确的字符串格式化，应该使用反引号括起来，并在占位符 `${}` 中使用变量名，例如 ``console.log(`当前高度: ${content.style.height}`)``。
4. 在 `v-for` 指令中，应该使用 `v-bind:key` 显式地绑定 `tableData` 数组中每个对象的唯一标识符，例如 `v-for="(item, index) in tableData" v-bind:key="item.number"`。

下面是修正后的代码：

<script>
let v = new Vue({
  el: '#app',
  data: {
    value1: '',
    value2: '',
    pickerOptions: {
      shortcuts: [
        {
          text: '今天',
          onClick(picker) {
            picker.$emit('pick', new Date());
          }
        },
        {
          text: '昨天',
          onClick(picker) {
            const date = new Date();
            date.setTime(date.getTime() - 3600 * 1000 * 24);
            picker.$emit('pick', date);
          }
        },
        {
          text: '一周前',
          onClick(picker) {
            const date = new Date();
            date.setTime(date.getTime() - 3600 * 1000 * 24 * 7);
            picker.$emit('pick', date);
          }
        }
      ]
    },
    tableData: [
      { number: '1', date: '2021-08-01' },
      { number: '2', date: '2021-08-01' },
      { number: '3', date: '2021-08-01' },
      { number: '4', date: '2021-08-01' },
      { number: '5', date: '2021-08-01' },
      { number: '6', date: '2021-08-01' },
      { number: '7', date: '2021-08-01' },
      { number: '8', date: '2021-08-01' }
    ],
    currentPage1: 5,
    currentPage2: 5,
    currentPage3: 5,
    currentPage4: 4
  },
  methods: {
    deleteRow(index, rows) {
      rows.splice(index, 1);
    },
    handleSizeChange(val) {
      console.log(`每页 ${val} 条`);
    },
    handleCurrentChange(val) {
      console.log(`当前页: ${val}`);
    },
    toggleContent() {
      var content = document.getElementById("content");
      var btn = document.getElementById("toggle-btn");
      if (content.style.height === "100px") {
        content.style.height = "auto";
        btn.innerHTML = "收起";
      } else {
        content.style.height = "100px";
        btn.innerHTML = "展开";
      }
      console.log(`当前高度: ${content.style.height}`);
    }
  }
});
</script>

<table>
  <thead>
    <tr>
      <th>序号</th>
      <th>日期</th>
      <th>操作</th>
    </tr>
  </thead>
  <tbody>
    <tr v-for="(item, index) in tableData" v-bind:key="item.number">
      <td>{{ item.number }}</td>
      <td>{{ item.date }}</td>
      <td><button @click="deleteRow(index, tableData)">删除</button></td>
    </tr>
  </tbody>
</table>

<div class="pagination">
  <el-pagination
    background
    layout="sizes, prev, pager, next, jumper"
    :current-page.sync="currentPage1"
    :page-sizes="[5, 10, 20]"
    :page-size="5"
    @size-change="handleSizeChange"
    @current-change="handleCurrentChange"
    :total="tableData.length"
  ></el-pagination>
</div>

<div id="content" style="overflow: hidden; height: 100px;">
  这是一段需要展开的内容。
</div>
<button id="toggle-btn" @click="toggleContent">展开</button>