Move a div to line up with a table row when clicked using jQuery

As I mentioned in a previous post, my experience with jQuery is limited and I apologize for that. The task I am attempting to accomplish seems relatively straightforward.

Here's an overview of the situation: I have a table enclosed within a div. Each row in the table represents a unique element. I have set it up so that when a link in each row is clicked, the corresponding data for that element is shown in a div next to the table. This aspect is functioning correctly.

My objective: I want the top of the popup div to align with the selected table row.

Below is a simplified version of my code:

    <div id="container" style="display:inline-block">
       <table>
          <tr id="selected_row">
             <td>
                <a href="/gohere" onclick="updatePos('#param_detail_container');">
                   @Html.DisplayFor(model => item.Name)
                </a>
             </td>
          </tr>
       </table>
    </div>

    <div id="popupDiv" style="display:inline-block; position:absolute; ">
        Content goes here...
    </div>

Script snippet:

    <script type="text/javascript" src="~/Scripts/jquery-1.6.2.min.js"></script>
    <script type="text/javascript">
       $(document).ready(function updatePos(popupDiv) {
          var top = $('#selected_row').offset().top;
             popupDiv.css({ top: top + "px" }).show();
          });
    </script>

An error message I encounter states:

    Microsoft JScript runtime error: Unable to get value of the property 'replace': object is null or undefined

The issue seems to be related to how I am setting the top attribute of the popupDiv. Any advice on resolving this?

Answer №1

To ensure the function is global, make sure to place it outside of the ready block:

/*$(document).ready(function() {

});*/

function positionUpdate(popupDiv) {
      var topPosition = $('#selected_item').offset().top;
      $(popupDiv).css({ top: topPosition + "px" }).show();
   }

In this scenario, using $(document).ready is unnecessary.

Answer №2

If this information was useful, please let me know.

<script type="text/javascript" src="~/Scripts/jquery-1.6.2.min.js"></script>
<script type="text/javascript">
   $(document).ready(function(){
      function adjustPosition(popupDiv) {
         var top = String($('#selected_row').offset().top);
             $(popupDiv).css("top", top + "px").show();
         };
      });
</script>

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