hide column/td of the table by using jquery

$(document).ready(function() {
    $("#td_1").hide();
});

But ideally, you want to use a class instead of an ID.

so

<table>
  <tr>
   <td class="td_1">name</td>
   <td class="td_2">title</td>
   <td class="td_3">desc</td>
  </tr>
  <tr>
   <td class="td_1">Dave</td>
   <td class="td_2">WEB DEV</td>
   <td class="td_3">Blah Blah</td>
  </tr>
  <tr>
   <td class="td_1">Nick</td>
   <td class="td_2">SEO</td>
   <td class="td_3">Blah Blah and blah</td>
  </tr>
</table>

And then you would use similar code:

$(document).ready(function() {
    $(".td_1").hide()
});

So the only thing that changed is the hash(#) to a dot(.). Hash is for ID's, Dot is for classes.

Yet another way would be to use the nthChild selector.

$(document).ready(function() {
    $('tr td:nth-child(1)').hide();
});

Where 1 is the column number to be hidden.

HTH

Some case, user use th for table header, you can use this script for hide column with th.

$('#test').click(function() {
    $('th:nth-child(2), tr td:nth-child(2)').hide();
})

$('#test').click(function() {
    $('th:nth-child(2), tr td:nth-child(2)').hide();
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<table border=1>
  <tr>
   <th id="td_1">name</th>
   <th id="td_2">title</th>
   <th id="td_3">desc</th>
  </tr>
  <tr>
   <td id="td_1">Dave</td>
   <td id="td_2">WEB DEV</td>
   <td id="td_3">Blah Blah</td>
  </tr>
  <tr>
   <td id="td_1">Nick</td>
   <td id="td_2">SEO</td>
   <td id="td_3">Blah Blah and blah</td>
  </tr>
</table>

<button id='test'>Hide title</button>