如何在 JS 中将声明变量简化为数组

Question

如何简化这段代码？是一种在一条线上进行全面操作的方法吗？没有在另一行中声明 semestrFrequency

let semestrFrequency = [];
document.querySelectorAll(`tbody tr td:nth-child(5) strong`)
  .forEach((item, index) => semestrFrequency[index] = item.innerText);

Answer 1

尝试

const semestrFrequency = [...document.querySelectorAll(`tbody tr td:nth-child(5) strong`)]
  .map(item => item.innerText);

console.log(semestrFrequency)

<table>
  <thead>
  </thead>
  <tbody>
    <tr>
      <td>1</td>
      <td>2</td>
      <td>3</td>
      <td>4</td>
      <td>5 <strong>Freq 1</strong> freq</td>
    </tr>
    <tr>
      <td>1</td>
      <td>2</td>
      <td>3</td>
      <td>4</td>
      <td>5 <strong>Freq 2</strong> freq</td>
    </tr>
</table>

如何在 JS 中将声明变量简化为数组

How to simplified declaration variable to array in JS

javascript

arrays

refactoring