html - Show Button in Last Row of the Table only using Javascript -


i have 4-column table last column containing "+" button. function add additional column when clicked. being shown in of rows, want displayed on last row of table.

here's code

  <table class="table table-responsive table-bordered" style="width:100%" id="heightconfig">     <tbody id="heightconfigbody"> @if (model != null) { @foreach (var data in model.reverse()) {      <tr>                          <td style="width:40%">   <label><b>recorded time:</b> <input type="text" id="recorddate"  class="recorddate"      value="@data.recorddate.tostring("yyyy-mm-dd")" disabled></label>                       </td>                           <td style="width:40%">                          <label><b>height (cm):</b> <input type="text" id="columntypedata" class="columntypedata"                            value="@data.columntypedata" ></label>                       </td>                        <td style="width:40%">                            <a class="btn btn-primary btn-default" title="delete"                             data-target="#modal-container" data-toggle="modal" data-align="center">                             <div id="minusheight"><i class="fa fa-minus" aria-hidden="true"></i></div>                             </a>        <a class="btn btn-primary btn-default" title="add"  >                               <div id="addheight" ><i class="fa fa-plus" aria-hidden="true"></i></div>      </a>                        </td>  </tr>  } }       </tbody>   </table>

just showed loop inside table because populating data.

here's screenshot

enter image description here

what want plus button displayed @ last row of table

in codes, generating rows based on template contains "+" button. should take part out of template:

<a class="btn btn-primary btn-default" title="add">     <div id="addheight" ><i class="fa fa-plus" aria-hidden="true"></i>     </div> </a>

instead, should have:

  1. a function checking/finding place/row number/element id of newest row. this: document.getelementbyid("mytable").rows.length return number of rows existing in table. careful of indexing though.

  2. another function insert/append "+" button specific row. this give insights.

  3. a way delete "+" button , reinsert since have "-" button delete rows in middle of table. button position requires update too.


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