Is it possible to use querySelectorAll() to select all table cells that have a specific class within a specific row or column?

Yes, it is possible to use `querySelectorAll()` to select all table cells that have a specific class within a specific row or column. To do this, you need to combine the row or column selector with the class selector.

Here's an example:

```html
<table id="myTable">
<tr>
<td class="myClass">1</td>
<td>2</td>
</tr>
<tr>
<td>3</td>
<td class="myClass">4</td>
</tr>
<tr>
<td class="myClass">5</td>
<td>6</td>
</tr>
</table>
```

Using JavaScript, you can select all table cells with class `myClass` in the first row like this:

```javascript
const firstRow = document.querySelector("#myTable tr:first-child");
const cells = firstRow.querySelectorAll("td.myClass");
```

And to select all table cells with class `myClass` in the first column, you can do the following:

```javascript
const cells = document.querySelectorAll("#myTable tr td:first-child.myClass");
```

Adjust the index for `:first-child` or use `:nth-child(n)` to target a different row or column.