How to remove   with javascript this case?

Question

I have a question.

<table id="mytable">
 <tr>
  <td>1</td>
  <td>2</td>
  <td>3</td>
  <td>&nbsp;</td>
  <td>4</td>
 </tr>
 <tr>
  <td>5</td>
  <td>6</td>
  <td>&nbsp;</td>
  <td>&nbsp;</td>
  <td>7</td>
 </tr>
 <tr>
  <td>&nbsp;</td>
  <td>&nbsp;</td>
  <td>8</td>
  <td>9</td>
  <td>10</td>
 </tr>
</table>

and here is script.

var table = document.getElementById("mytable");
for (var i = 0; i < 3; i++) {
  for (var k = 0; k < 5; k++) {
    var str = table.rows[i].cells[k].innerHTML;
    alert(str);
  }
};

I try to code this

alert(str.replace(/( )*/g,''))

but then empty alert box show up.

I want to pop up cells value expect &nb sp; and empty box.

---

show up '&nbsp'. I don't want it.

show up "". I don't want it.

I want this. Thank you for comment.

        var str = table.rows[i].cells[k].innerHTML.replace(/[&]nbsp[;]/gi,"");
         if (str.length > 0) {
          alert(str);
        }

Answer 1

Replace the innerHtml of td with empty string by Regex and check the length of string. If the length is bigger than 0, alert that.

var table = document.getElementById("mytable");
for (var i = 0; i < 3; i++) {
  for (var k = 0; k < 5; k++) {
    var str = table.rows[i].cells[k].innerHTML;
    str = str.replace(/(&nbsp;)*/g, '');
    if (str.length) alert(str);
  }
};

<table id="mytable">
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
    <td>&nbsp;</td>
    <td>4</td>
  </tr>
  <tr>
    <td>5</td>
    <td>6</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>7</td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>8</td>
    <td>9</td>
    <td>10</td>
  </tr>
</table>