有什么办法可以添加 <td> 使用javascript访问每个表格行

Question

我想在用JavaScript单击按钮时向每行添加一个<td> ，但是我希望它是一个切换按钮，当它第二次单击时必须再次消失。

我尝试在table标记的子项上执行for循环，但添加了一个表行，我还尝试为它们提供了相同的类，但仅将for添加到该类的第一个元素上。

这是我添加表格信息的地方

const verwerkDatatable = function(data) {
  console.log(data);
  const table = document.querySelector('.js-table');
  table.innerHTML = `<tr class="js-table-header">
  <td>Naam:</td>
  <td>Toevoegdatum:</td>
  <td>Vervaldatum:</td>
  <td>Aantal:</td>
</tr>`;
  for (let object of data) {
    const amount = object.amount;
    const name = object.name;
    const addDate = object.date;
    const exDate = object.expirationDate;
    table.innerHTML += `<tr class="js-tr">
  <td>${name}</td>
  <td>${addDate}</td>
  <td>${exDate}</td>
  <td>${amount}</td>
</tr>`;
  }
  listenToTrash();
};

在这里，我尝试添加带有SVG的单元格

const listenToTrash = function() {
  const trash = document.querySelector('.js-trash');
  trash.addEventListener('click', function() {
    const tableHeader = document.querySelector('.js-table-header');
    tableHeader.innerHTML = `<tr class="js-table-header">
    <td>Naam:</td>
    <td>Toevoegdatum:</td>
    <td>Vervaldatum:</td>
    <td>Aantal:</td>
    <td>Verwijderen:</td>
  </tr>`;
    const tableRow = document.querySelectorAll('.js-tr');
    console.log(tableRow)
    for (row of tableRow){
    tableRow.innerHTML +=
      '<td> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M3 8v16h18v-16h-18zm5 12c0 .552-.448 1-1 1s-1-.448-1-1v-8c0-.552.448-1 1-1s1 .448 1 1v8zm5 0c0 .552-.448 1-1 1s-1-.448-1-1v-8c0-.552.448-1 1-1s1 .448 1 1v8zm5 0c0 .552-.448 1-1 1s-1-.448-1-1v-8c0-.552.448-1 1-1s1 .448 1 1v8zm4-15.375l-.409 1.958-19.591-4.099.409-1.958 5.528 1.099c.881.185 1.82-.742 2.004-1.625l5.204 1.086c-.184.882.307 2.107 1.189 2.291l5.666 1.248z"/></svg></td>';
    }
  });
};

Answer 1

使用forEach遍历.js-tr ，然后创建一个元素td将svg设置为td的子元素，然后将其附加到每个js-tr 。

const tableRow = document.querySelectorAll('.js-tr');
tableRow.forEach(function (el) {
  const td = document.createElement('td');
  td.innerHTML = '<td> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M3 8v16h18v-16h-18zm5 12c0 .552-.448 1-1 1s-1-.448-1-1v-8c0-.552.448-1 1-1s1 .448 1 1v8zm5 0c0 .552-.448 1-1 1s-1-.448-1-1v-8c0-.552.448-1 1-1s1 .448 1 1v8zm5 0c0 .552-.448 1-1 1s-1-.448-1-1v-8c0-.552.448-1 1-1s1 .448 1 1v8zm4-15.375l-.409 1.958-19.591-4.099.409-1.958 5.528 1.099c.881.185 1.82-.742 2.004-1.625l5.204 1.086c-.184.882.307 2.107 1.189 2.291l5.666 1.248z"/></svg></td>';
  el.appendChild(td);
})

更新 ：这是带有onclick事件的代码段：

 const tableRow = document.querySelectorAll('.js-tr'); tableRow.forEach(function (el) { const td = document.createElement('td'); td.className = 'hidden'; td.style.cursor = 'pointer'; td.innerHTML = '<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24"><path d="M3 8v16h18v-16h-18zm5 12c0 .552-.448 1-1 1s-1-.448-1-1v-8c0-.552.448-1 1-1s1 .448 1 1v8zm5 0c0 .552-.448 1-1 1s-1-.448-1-1v-8c0-.552.448-1 1-1s1 .448 1 1v8zm5 0c0 .552-.448 1-1 1s-1-.448-1-1v-8c0-.552.448-1 1-1s1 .448 1 1v8zm4-15.375l-.409 1.958-19.591-4.099.409-1.958 5.528 1.099c.881.185 1.82-.742 2.004-1.625l5.204 1.086c-.184.882.307 2.107 1.189 2.291l5.666 1.248z"/></svg>'; el.appendChild(td); td.onclick = function () { if (this.classList.contains('hidden')) { this.classList.remove('hidden'); } else { this.classList.add('hidden'); } } }) 

 .hidden svg { opacity: 0; visibility: hidden; } .hidden { background-color: red; } 

 <table> <tr class="js-tr"> <td>1</td> <td>2</td> <td>3</td> </tr> </table>