AngularJS Example:

HTML

<table>
  <tr>
    <td>
      <select>
        <option></option>
        <option>Select anything</option>
      </select>
    </td>
    <td>
      <input type="text" name="field1">
    </td>
    <td>
      <input type="text" name="field2">
    </td>
  </tr>
  <tr>
    <td>
      <select>
        <option></option>
        <option>Select something</option>
      </select>
    </td>
    <td>
      <input type="text" name="field3">
    </td>
    <td>
      <input type="text" name="field4">
    </td>
  </tr>
</table>

CSS

.done-true {
  text-decoration: line-through;
  color: grey;
}

JavaScript

var length = $('table ').filter(function(i,y) {
alert(y);
  //return ($(this).val() == "") ? this : '';
});
console.log(length)