How can I tell if table row is in view using jQuery?

jQueryWeb DevelopmentFront End Technology

To check if table row exists or not, use the is() method, with the :visible selector −

if($(".row").is(":visible")) {
  alert("Visible!");
}

You can try to run the following code to learn how to chck if a row exists or not. It even notifies when a new row is created −

Example

Live Demo

<!DOCTYPE html>
<html>
<head>
  <title>jQuery - Add Table Rows</title>
  <style>
  table{
   width: 100%;
   margin: 25px 0;
   border-collapse: collapse;
  }
  table, th, td{
   border: 1px solid #6C220B;
  }
  table th, table td{
   padding: 8px;
   text-align: left;
  }
  </style>
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script>
  $(document).ready(function(){
    $(".row").click(function(){
      if($(".row").is(":visible")) {
        alert("Exists: A new row will create now.");
      }
    var name = $("#name").val();
    var subject = $("#subject").val();
    var markup = "<tr><td><input type='checkbox' name='record'></td><td>" + name + "</td><td>" + subject + "</td></tr>";
    $("table tbody").append(markup);
    });
  });    

</script>
</head>
<body>
  <form>
   <input type="text" id="name" placeholder="Enter Name">
   <input type="text" id="subject" placeholder="Enter Subject">
   <input type="button" class="row" value="Click to Add Row">
  </form>
<table>
  <thead>
    <tr>
      <th>Choose</th>
      <th>Name</th>
      <th>Subject</th>
    </tr>
  </thead>
  <tbody>
    <tr>
     <td><input type="checkbox" name="result"></td>
     <td>Amit</td>
     <td>Java</td>
    </tr>
  </tbody>
</table>
</body>
</html>
raja
Published on 31-Jul-2018 14:33:12
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