Check if textbox exist in table cell or not

Here is my code:

var result = '';
var rows = $("#table_wf tbody tr input[type='checkbox']:checked").closest('tr');
for (var i = 0; i < rows.length; i++) {
    var row = rows[i]
    result += rows[i].cells[0].innerHTML;
    var v = rows[i].cells.find("td input[type=text]");
    if (rows[i].cells.find("input[type=text]").length) {
    } 
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<table id="table_wf">
    <tbody>
      <tr>
        <td>A</td>
        <td>Some Dummy Text</td>
        <td></td>
        <td><input id="chk_001" type="checkbox" selected></td>
      </tr>
      <tr>
        <td>B</td>
        <td>Some Dummy Text</td>
        <td><input id="text_002" type="text" value="22"/></td>
        <td><input id="chk_002" type="checkbox" selected/></td>
      </tr>
    </tbody>
</table>

1st column contain codes like A,B,C

2nd column contain some dummy text

3rd column might contain a input box or might not, here 1st row does not have text box, 2nd row does

4th and last column contain a checkbox

now on change of any checkbox what I want is

text from column 1 + text from column 3 text box if present

I am able to get value from first <td> tag of row but not able to check if that row contain text box in 3rd <td> tag and if does, retrieve it's value

if (rows[i].cells.find("input[type=text]").length) {}

This is found on a post but it says that find rows[i].cells.find is not a function.

Maybe .find is not available on cells.

Anyway to accomplish this ?

value should be A (1st row), B22 (from 2nd row)

One comment suggested that rows[i].cells.find("td input[type=text]") means that finding a td within td collection because rows[i].cells return list of td, so I changed it to

rows[i].find("td input[type=text]").length

But error is still "rows[i].find is not a function"

Your requirement is exactly what .map was designed for.

Keeping with jquery one liner:

$("#table_wf tbody tr td :checked")
    .closest('tr')
    .map((i, e) => 
        $(e).find("td").eq(0).text() + ($(e).find("input[type='text']").val() || "")
    ).toArray();

Breakdown:

• selector gets all the ticked checkboxes
• gets all the rows for those checkboxes
• loops through the rows
• gets the first cell using .find("td").eq(0) and returns its text
• gets the first textbox and returns its value - .val() will give the value of the first found
• || "" converts undefined to empty string
• .toArray() converts the jquery .map response to a basic array
• then you can .join(" ") if you want as a single string or use the array

Snippet

$("#table_wf :checkbox").click(() => {
  var result = $("#table_wf tbody tr td :checked").closest('tr').map((i, e) => $(e).find("td").eq(0).text() + ($(e).find("input[type='text']").val() || "")).toArray();
  
  console.log(result.join(" "))
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>

<table id="table_wf">
  <tbody>
    <tr>
      <td>A</td>
      <td>Some Dummy Text</td>
      <td></td>
      <td><input id="chk_001" type="checkbox" selected></td>
    </tr>
    <tr>
      <td>B</td>
      <td>Some Dummy Text</td>
      <td><input id="text_002" type="text" value="22" /></td>
      <td><input id="chk_002" type="checkbox" selected checked /></td>
    </tr>
  </tbody>
</table>