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javascript – Freeze first row and first column of table

Posted by: admin July 12, 2020 Leave a comment

Questions:

I am trying to freeze/lock the first row and the first column of a table.

I have tried giving thead position: absolute; or position: fixed; but it looks strange.

I have followed some answers but I am still confused how to make it.

My HTML / CSS Code :

th {    
   font-size: 80%;
   text-align: center;
}
td {
   font-size : 65%;
   white-space: pre;
   text-align: center;
}
.inner {
   overflow-x: scroll;
   overflow-y: scroll;
   width: 300px;
   height: 100px;
}
input {
   font-size : 65%;
}
<body>
  <div class="inner">
    <form method="POST" action="dashboard">
      <table class="table table-bordered">
        <thead>
          <tr>
            <th>ID</th>
            <th>Tanggal</th>
            <th>Judul Pekerjaan</th>
            <th>Deskripsi</th>
            <th>Level</th>
            <th>Category</th>
            <th>Severity</th>
          </tr>
        </thead>
    </form>
        <tbody>
          <tr>
            <td>1</td>
            <td>1 May 2017</td>
            <td>Satu</td>
            <td>Satu</td>
          </tr>
          <tr>
            <td>2</td>
            <td>2 May 2017</td>
            <td>Dua</td>
            <td>Dua</td>
          </tr>
          <tr>
            <td>3</td>
            <td>3 May 2017</td>
            <td>Tiga</td>
            <td>Tiga</td>
          </tr>
          <tr>
            <td>3</td>
            <td>3 May 2017</td>
            <td>Tiga</td>
            <td>Tiga</td>
          </tr>
        </tbody>
      </table>
  </div>
</body>
How to&Answers:

Freeze First Row

Freezing the first row can be done with CSS by setting the table body to overflow: auto, and giving a fixed width to the table cells. (See example 1)

Freeze First Row & First Column

However, to get this behavior for both first row and first column, you need to separate the first row, first column, and first cell from the table, and then continuously set the position of these elements based on the scrolled position of the table body, upon a scroll event. (See example 2)

Example 1: (Freeze first row only)

table thead tr {
    display: block;
}
table th, table td {
    width: 80px;
}
table tbody {
    display: block;
    height: 90px;
    overflow: auto;
}
th {
    text-align: center;
}
td {
    text-align: center;
    white-space: pre;
}
<table class="table table-bordered">
  <thead>
    <tr>
      <th>ID</th>
      <th>Tanggal</th>
      <th>Judul Pekerjaan</th>
      <th>Deskripsi</th>
      <th>Level</th>
      <th>Category</th>
      <th>Severity</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>1</td>
      <td>1 May 2017</td>
      <td>Satu</td>
      <td>Satu</td>
    </tr>
    <tr>
      <td>2</td>
      <td>2 May 2017</td>
      <td>Dua</td>
      <td>Dua</td>
    </tr>
    <tr>
      <td>3</td>
      <td>3 May 2017</td>
      <td>Tiga</td>
      <td>Tiga</td>
    </tr>
    <tr>
      <td>3</td>
      <td>3 May 2017</td>
      <td>Tiga</td>
      <td>Tiga</td>
    </tr>
    <tr>
      <td>2</td>
      <td>2 May 2017</td>
      <td>Dua</td>
      <td>Dua</td>
    </tr>
    <tr>
      <td>3</td>
      <td>3 May 2017</td>
      <td>Tiga</td>
      <td>Tiga</td>
    </tr>
    <tr>
      <td>3</td>
      <td>3 May 2017</td>
      <td>Tiga</td>
      <td>Tiga</td>
    </tr>
  </tbody>
</table>

Example 2: (Freeze first row and first column)

$(document).ready(function() {
  $('tbody').scroll(function(e) { 
    $('thead').css("left", -$("tbody").scrollLeft());
    $('thead th:nth-child(1)').css("left", $("tbody").scrollLeft()-5); 
    $('tbody td:nth-child(1)').css("left", $("tbody").scrollLeft()-5); 
  });
});
body {
  margin: 0;
}
th, td {
    text-align: center;
    background-color: white
}
table {
  position: relative;
  width: 400px;
  overflow: hidden;
}
thead {
  position: relative;
  display: block;
  width: 400px;
  overflow: visible;
}
thead th {
  min-width: 80px;
  height: 40px;
}
thead th:nth-child(1) {
  position: relative;
  display: block;
  height: 40px;
  padding-top: 20px;
}
tbody {
  position: relative;
  display: block;
  width: 400px;
  height: 90px;
  overflow: scroll;
}
tbody td {
  min-width: 80px;
}
tbody tr td:nth-child(1) {
  position: relative;
  display: block;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table class="table table-bordered">
  <thead>
    <tr>
      <th>ID</th>
      <th>Tanggal</th>
      <th>Judul Pekerjaan</th>
      <th>Deskripsi</th>
      <th>Level</th>
      <th>Category</th>
      <th>Severity</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>1</td>
      <td>1 May 2017</td>
      <td>Satu</td>
      <td>Satu</td>
      <td>5</td>
      <td>Lorem</td>
      <td>Ipsum</td>
    </tr>
    <tr>
      <td>2</td>
      <td>2 May 2017</td>
      <td>Dua</td>
      <td>Dua</td>
    </tr>
    <tr>
      <td>3</td>
      <td>3 May 2017</td>
      <td>Tiga</td>
      <td>Tiga</td>
    </tr>
    <tr>
      <td>3</td>
      <td>3 May 2017</td>
      <td>Tiga</td>
      <td>Tiga</td>
    </tr>
    <tr>
      <td>2</td>
      <td>2 May 2017</td>
      <td>Dua</td>
      <td>Dua</td>
    </tr>
    <tr>
      <td>3</td>
      <td>3 May 2017</td>
      <td>Tiga</td>
      <td>Tiga</td>
    </tr>
    <tr>
      <td>3</td>
      <td>3 May 2017</td>
      <td>Tiga</td>
      <td>Tiga</td>
    </tr>
  </tbody>
</table>

Answer:

I resoved this issue from myself with my colleague together yesterday. The adapted CSS is:

.pcvBody {
  overflow-x: auto;
  width: calc(100vw - 110px);

}
/* CSS START for freezing table column*/
#prodTable {
  position: relative;
  overflow: hidden;
}
#prodTable thead {
  position: relative;
  display: block;
  overflow: visible;
}
#prodTable thead th {
  min-width: 150px;
  width: 1000px;
}
#prodTable thead th:nth-child(1), #prodTable thead th:nth-child(2) {
  position: relative;
  /*display: block;*/
  max-width: 150px;
  width: 50px;
  border-left: 1px solid #ededed;
}
#prodTable tbody {
  position: relative;
  display: block;

}
#prodTable tbody td {
  min-width: 150px;
  width: 1000px;
}
#prodTable tbody input {
  max-width: 120px;
}
#prodTable tbody tr td:nth-child(1), #prodTable tbody tr td:nth-child(2) {
  position: relative;
  /*display: block;*/
  background-color: white;
  min-height: 20px;
  max-width: 150px;
  width: 50px;
  border-left: 1px solid #ededed;
}
/* CSS END for freezing table column*/

And the adjusted scroll event is:

$('#pcvBody').scroll(function(e) {
  var scrollLeft = $("#pcvBody").scrollLeft();
  //$('#prodTable thead').css("left", -tbodyScrollLeft);
  //$('#prodTable thead th:nth-child(1)').css("left", tbodyScrollLeft - 5); 
  //$('#prodTable tbody td:nth-child(1)').css("left", tbodyScrollLeft - 5); 
  $('#prodTable thead th:nth-child(1)').css("left", scrollLeft); 
  $('#prodTable tbody td:nth-child(1)').css("left", scrollLeft); 
  $('#prodTable thead th:nth-child(2)').css("left", scrollLeft);
  $('#prodTable tbody td:nth-child(2)').css("left", scrollLeft);
});

And in addition, I added a ‘div’ to wrap the table.