CODEWITHSUNDEEP
javascriptjqueryhtmlappend
guradio
guradio

Reputation: 15555

Appending td in tr and then in tbody

I have the next code:

var data_object =[{"data1":"DATA1","data2":"DATA2","data3":"DATA3"}]

var tr;
for (var ctr = 0; ctr < data_object.length; ctr++) {
  tr = $("<tr></tr>");
  tr.append("<td>" + data_object[ctr].data1 ? data_object[ctr].data1 : '' + "</td>");
  tr.append("<td>" + data_object[ctr].data2 ? data_object[ctr].data2 : '' + "</td>");
  tr.append("<td>" + data_object[ctr].data3 ? data_object[ctr].data3 : '' + "</td>");

  $('#tblAutoMatch tbody').append(tr)
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table id="tblAutoMatch" class="table table-bordered" width="100%">
  <thead>
    <tr>
      <th class="col-md-1" style="text-align: center; width: 5%;">Data 1</th>
      <th class="col-md-1" style="text-align: center; width: 13%;">Data 2</th>
      <th class="col-md-1" style="text-align: center; width: 13%;">Data 3</th>
    </tr>
  </thead>
  <tbody></tbody>
</table>

However, there is a problem: Why is td not appended to tr? I only get text in the tr.

Upvotes: 3

Views: 84

Answers (1)

Shidersz
Shidersz

Reputation: 17190

You need to wrap your expressions that use the ternary operator by parenthesis (...), example:

tr.append("<td>" + (data_object[ctr].data1 ? data_object[ctr].data1 : '') + "</td>");

So, they are evaluated as you will expect. Otherwise your expression will be evaluated like this:

tr.append(("<td>" + data_object[ctr].data1) ? data_object[ctr].data1 : ('' + "</td>"));

And will be reduced to data_object[ctr].data1 because ("<td>" + data_object[ctr].data1) will be evaluated to true.

$(document).ready(function()
{
    var data_object = [
      {"data1":"DATA1","data2":"DATA2","data3":"DATA3"}
    ];

    var tr;
    
    for (var ctr = 0; ctr < data_object.length; ctr++)
    {
        tr = $("<tr>");
        tr.append("<td>" + (data_object[ctr].data1 ? data_object[ctr].data1 : '') + "</td>");
        tr.append("<td>" + (data_object[ctr].data2 ? data_object[ctr].data2 : '') + "</td>");
        tr.append("<td>" + (data_object[ctr].data3 ? data_object[ctr].data3 : '') + "</td>");

        $('#tblAutoMatch tbody').append(tr)
    }
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<table id="tblAutoMatch" class="table table-bordered" width="100%">
  <thead>
    <tr>
      <th class="col-md-1" style="text-align: center; width: 5%;">Data 1</th>
      <th class="col-md-1" style="text-align: center; width: 13%;">Data 2</th>
      <th class="col-md-1" style="text-align: center; width: 13%;">Data 3</th>
    </tr>
  </thead>
  <tbody></tbody>
</table>

Upvotes: 3

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