<table width="50%" border="1" cellpadding="1" cellspacing="1" class="test" id="test">
      <tr id="columname">
        <th>Name</th>
        <th>Emp no.</th>
        <th>Company</th>
        <th>Mobile no.</th>
      </tr>
      <tr>
        <td>
          <input type="text" class="txtbox" value="" />
          <input type="button" value="Add" class="plusbtn" />
          <input type="button" value="Remove" class="minusbtn" />
        </td>
        <td>
          <input type="text" class="txtbox" value="" />
          <input type="button" value="Add" class="plusbtn1" />
          <input type="button" value="Remove" class="minusbtn1" />
        </td>
        <td>
          <input type="text" class="txtbox" value="" />
          <input type="button" value="Add" class="plusbtn2" />
          <input type="button" value="Remove" class="minusbtn2" />
        </td>
        <td>
          <input type="text" class="txtbox" value="" />
          <input type="button" value="Add" class="plusbtn3" />
          <input type="button" value="Remove" class="minusbtn3" />
        </td>
      </tr>
    </table>
JQUERY :
    var Row = document.getElementById("columname");
    var Cells = Row.getElementsByTagName("th");
    $('#test').on('click','.plusbtn',function()
    {
        if(Cells[0].innerText == 'Name'){
        $('#test').append('<tr><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn" /><input type="button" value="Remove" class="minusbtn" /></td><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn1" /><input type="button" value="Remove" class="minusbtn1" /></td><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn2" /><input type="button" value="Remove" class="minusbtn2" /></td><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn3" /><input type="button" value="Remove" class="minusbtn3" /></td></tr>');
        return false;
        }
    });
    if(Cells[1].innerText == 'Emp no.'){
    $('#test').on('click','.plusbtn1',function(){
    $('#test').append('<tr><td></td><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn1" /><input type="button" value="Remove" class="minusbtn1" /></td><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn2" /><input type="button" value="Remove" class="minusbtn2" /></td><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn3" /><input type="button" value="Remove" class="minusbtn3" /></td></tr>');
    return false;
    });
    }
    if(Cells[2].innerText == 'Company'){
    $('#test').on('click','.plusbtn2',function(){
    $('#test').clone().append('<tr><td></td><td></td><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn2" /><input type="button" value="Remove" class="minusbtn2" /></td><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn3" /><input type="button" value="Remove" class="minusbtn3" /></td></tr>');
    return false;
    });
    }
    if(Cells[3].innerText == 'Mobile no.'){
    $('#test').on('click','.plusbtn3',function(){
    $('#test').append('<tr><td></td><td></td><td></td><td><input type="text" class="txtbox" value="" /><input type="button" value="Add" class="plusbtn3" /><input type="button" value="Remove" class="minusbtn3" /></td></tr>');
    return false;
    });
    }
    $('#test').on('click','.minusbtn',function(){
            if($("#test tr").length != 2)
                {
                    $(this).closest('tr').remove();
                    return false;
                }
           else
                {
                    alert("You cannot delete first row");
                }
        });
        $('#test').on('click','.minusbtn1',function(){
            if($("#test tr").length != 2)
                {
                    $(this).closest('tr').remove();
                    return false;
                }
           else
                {
                    alert("You cannot delete first row");
                }
        });
        $('#test').on('click','.minusbtn2',function(){
            if($("#test tr").length != 2)
                {
                    $(this).closest('tr').remove();
                    return false;
                }
           else
                {
                    alert("You cannot delete first row");
                }
        });
        $('#test').on('click','.minusbtn3',function(){
            if($("#test tr").length != 2)
                {
                    $(this).closest('tr').remove();
                    return false;
                }
           else
                {
                    alert("You cannot delete first row");
                }
        });
        CSS:
        txtbox { border: none; width: 100%; } input { font-size: 17px; height: 30px;
} table { background: none repeat scroll 0 0 ; border: 1px solid #000; } #test { border-collapse: separate; empty-cells: hide; }