kmj's questions

我需要使用嵌套的获取请求来实现一个函数。我收到以下错误
加载资源失败：服务器响应状态为 404（未找到）；
Uncaught (in promise) SyntaxError: Unexpected token < in JSON at position 0

async function getCart() {
    fetch(base_api_path + '/cart/getAllOrders', {method: 'GET'})
    .then(res => res.json())
    .then(res => {
        res.forEach(income => {
              .....
            fetch(base_api_path+'/cart/getItems',
            {
                method: 'POST',
                headers: {'Content-Type': 'application/json'},
                body: JSON.stringify(
                    {
                        id: income.itemId
                       
                    }
                )
            })
            .then(res => res.json())
            .then(res => {
            res.forEach(intel => {
                .....
               })
             })
            })
   
}

告诉我，是否可以在 fetch 中使用 fetch，我的错误是什么？

exports.getAllOrders = async function (req, res) {
if(req.user){
const allOrders = await Orders.findAll({ where: { userId: req.user.id } })
res.send(JSON.stringify(allOrders)) }
}

exports.getItems = async function (req, res) {
    const allItems = await Items.findAll({ where: { id: req.body.id } })
    res.send(JSON.stringify(allItems));
}

我正在尝试使用 发送所有收到的项目res.send(JSON.stringify(items));，但正在发送一个空对象 {}。如何解决这个问题？

Orders.findAll({
    where: {
        userId: req.user.id
    }
}
)
    .then(p => {
        p.forEach(elf => {
            items = Items.findAll({
                where: {
                    id: elf.itemId
                }
            })    
        })          
    res.send(JSON.stringify(items));
    });

我有一个表，我正在尝试按列（名字），（年龄）对其进行排序。我找不到问题所在。

document.addEventListener('DOMContentLoaded', () => {
  const table = document.querySelector('.table');
  const indexToSorting = [...table.tHead.rows[0].cells].findIndex(cell => cell.classList.contains('first'));
  const availableIndexes = [...table.tHead.rows[0].cells].findIndex(cell => cell.classList.contains('second'));
  const sortedRows = [...table.tBodies[0].rows].sort((rowA, rowB) => {

    const cellA = rowA.cells[indexToSorting].innerText;
    const cellB = rowB.cells[indexToSorting].innerText;
    const rowAAvailable = rowA.cells[availableIndexes].innerText;
    const rowBAbailable = rowB.cells[availableIndexes].innerText;
    const nameComparison = cellA.localeCompare(cellB);
    const availableComparison = rowAAvailable.localeCompare(rowBAbailable);
    return nameComparison !== 0 ? nameComparison : availableComparison
  });
 sortedRows.forEach(r => table.tBodies[0].append(r));
});

<table class="table">
  <thead>
    <tr>
      <th class="first">FirstName</th>
      <th class="second">Age</th>
      <th>Address</th>

    </tr>
  </thead>

  <tbody id="tbody">
    <tr>
      <td>firstname1</td>
      <td>2</td>
      <td>ccdd</td>
    </tr>
    <tr>
      <td>nnnxbxc</td>
      <td>10</td>
      <td>sdjk</td>
    </tr>
    <tr>
      <td>firstname1</td>
      <td>100</td>
      <td>d</td>
    </tr>
    <tr>
      <td>firstname1</td>
      <td>1</td>
      <td>ddd</td>
    </tr>

  </tbody>
</table>