How to place the dataTables' horizontal scroll

2020-07-09 10:43发布

站内问答 / JavaScript
1064 5 5

I have a really large datatable and I want to put the horizontal scrollbar on top as well as on the bottom of the table so it would be easier for the user to scroll (the datatable has a lot of columns). Is there an easy and proper way to achieve this?

5条回答
Melony?
2楼-- · 2020-07-09 11:01

pls have a look at a similar query here:

horizontal scrollbar on top and bottom of table

This solution has worked for my datatable.

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We Are One
3楼-- · 2020-07-09 11:01

You can use overflow property in css.

You should separate body and header of your table in two different tables. then place the second table (body of original table) in a div and use overflow on this div.

DEMO in jsfiddle

<html>
<head>
    <style>
        .myOverflow {
            height: 100px; 
            overflow-y: scroll; 
            display: inline-block;
        }
    </style>
</head>
<body>
    <table id="HeaderTable">
        <tr>
            <td class="col1">Column1</td>
            <td class="col2">Column2</td>
        </tr>
    </table>
    <div class="myOverflow">
        <table id="BodyTable">
            <tr>
                <td class="col1">a</td>
                <td class="col2">b</td>
            </tr>
            <tr>
                <td>c</td>
                <td>d</td>
            </tr>
            <tr>
                <td>e</td>
                <td>f</td>
            </tr>
        </table>
    </div>
</body>
</html>

<script>
</script>
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祖国的老花朵
4楼-- · 2020-07-09 11:09

I show scrollbar of the header with css/jQuery and set the body scrollLeft to the header's scroll left.

Example:

// Put top scroller
$('.dataTables_scrollHead').css({
    'overflow-x':'scroll'
}).on('scroll', function(e){
    var scrollBody = $(this).parent().find('.dataTables_scrollBody').get(0);
    scrollBody.scrollLeft = this.scrollLeft;
    $(scrollBody).trigger('scroll');
});

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干净又极端
5楼-- · 2020-07-09 11:15

You can use a container that has a maximum width and put the table inside. 

<div class="large-table-container-1">
  <table>...</table>
</div>

Depending on how much reliability you want, you can make:

A. Bottom scrollbar, just set a maximum width and overflow x to scroll:

.large-table-container-1 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
}

Demo:

.large-table-container-1 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
}
.large-table-container-1 table {
  
}

/*misc*/
td {
  border: 1px solid gray;
}

th {
  text-align: left;
}
<div class="large-table-container-1">
  <table>
    <thead>
      <tr>
        <th colspan="20">
          Bottom scrollbar:
        </th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
      </tr>
    </tbody>
  </table>
</div>

B. Top scrollbar, a little hacky, use a 180 degree transform to rotate the scrollbar to the top, then again another 180 degree to put back the content.

.large-table-container-2 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
  transform:rotateX(180deg);
}

.large-table-container-2 table {
  transform:rotateX(180deg);
}

You may want to use broswser specific prefixes for transform, like -webkit-transform:rotateX(180deg);.

Demo:

.large-table-container-2 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
  transform:rotateX(180deg);
}
.large-table-container-2 table {
  transform:rotateX(180deg);
}

/*misc*/
td {
  border: 1px solid gray;
}

th {
  text-align: left;
}
<div class="large-table-container-2">
  <table>
    <thead>
      <tr>
        <th colspan="20">
          Top scrollbar:
        </th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
      </tr>
    </tbody>
  </table>
</div>

C. Top and bottom scrollbar, a little more hacky. Needs some javascript. Use the solution form A above and add a 'fake' div for top scrollbar:

<div class="large-table-fake-top-scroll-container-3">
  <div>&nbsp;</div>
</div>
<div class="large-table-container-3">
  <table>...</table>
</div>


.large-table-container-3 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
}
.large-table-container-3 table {

}
.large-table-fake-top-scroll-container-3 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
}
.large-table-fake-top-scroll-container-3 div {
  background-color: red;/*Just for test, to see the 'fake' div*/
  font-size:1px;
  line-height:1px;
}

And a little javascript to catch the scroll on the top fake div and then scroll the table container (and vice-versa), with jQuery:

$(function() {
  var tableContainer = $(".large-table-container-3");
  var table = $(".large-table-container-3 table");
  var fakeContainer = $(".large-table-fake-top-scroll-container-3");
  var fakeDiv = $(".large-table-fake-top-scroll-container-3 div");

  var tableWidth = table.width();
  fakeDiv.width(tableWidth);

  fakeContainer.scroll(function() {
tableContainer.scrollLeft(fakeContainer.scrollLeft());
  });
})

Demo:

$(function() {
  var tableContainer = $(".large-table-container-3");
  var table = $(".large-table-container-3 table");
  var fakeContainer = $(".large-table-fake-top-scroll-container-3");
  var fakeDiv = $(".large-table-fake-top-scroll-container-3 div");

  var tableWidth = table.width();
  fakeDiv.width(tableWidth);
  
  fakeContainer.scroll(function() {
    tableContainer.scrollLeft(fakeContainer.scrollLeft());
  });
  tableContainer.scroll(function() {
    fakeContainer.scrollLeft(tableContainer.scrollLeft());
  });
})
.large-table-container-3 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
}
.large-table-container-3 table {
  
}
.large-table-fake-top-scroll-container-3 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
}
.large-table-fake-top-scroll-container-3 div {
  background-color: red;
  font-size:1px;
  line-height:1px;
}

/*misc*/
td {
  border: 1px solid gray;
}

th {
  text-align: left;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="large-table-fake-top-scroll-container-3">
  <div>&nbsp;</div>
</div>
<div class="large-table-container-3">
  <table>
    <thead>
      <tr>
        <th colspan="20">
          Top and bottom scrollbar:
        </th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
      </tr>
    </tbody>
  </table>
</div>

The working complete code for all three solutions:

$(function() {
  var tableContainer = $(".large-table-container-3");
  var table = $(".large-table-container-3 table");
  var fakeContainer = $(".large-table-fake-top-scroll-container-3");
  var fakeDiv = $(".large-table-fake-top-scroll-container-3 div");

  var tableWidth = table.width();
  fakeDiv.width(tableWidth);
  
  fakeContainer.scroll(function() {
    tableContainer.scrollLeft(fakeContainer.scrollLeft());
  });
  tableContainer.scroll(function() {
    fakeContainer.scrollLeft(tableContainer.scrollLeft());
  });
})
/*Bottom scrollbar*/
.large-table-container-1 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
}
.large-table-container-1 table {
  
}

/*Top scrollbar*/
.large-table-container-2 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
  transform:rotateX(180deg);
}
.large-table-container-2 table {
  transform:rotateX(180deg);
}

/*Top and bottom scrollbar*/
.large-table-container-3 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
}
.large-table-container-3 table {
  
}
.large-table-fake-top-scroll-container-3 {
  max-width: 200px;
  overflow-x: scroll;
  overflow-y: auto;
}
.large-table-fake-top-scroll-container-3 div {
  background-color: red;
  font-size:1px;
  line-height:1px;
}

/*misc*/
td {
  border: 1px solid gray;
}

th {
  text-align: left;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="large-table-container-1">
  <table>
    <thead>
      <tr>
        <th colspan="20">
          Bottom scrollbar:
        </th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
      </tr>
    </tbody>
  </table>
</div>

<div class="large-table-container-2">
  <table>
    <thead>
      <tr>
        <th colspan="20">
          Top scrollbar:
        </th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
      </tr>
    </tbody>
  </table>
</div>


<div class="large-table-fake-top-scroll-container-3">
  <div>&nbsp;</div>
</div>
<div class="large-table-container-3">
  <table>
    <thead>
      <tr>
        <th colspan="20">
          Top and bottom scrollbar:
        </th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
        <td>00</td>
        <td>01</td>
        <td>02</td>
        <td>03</td>
        <td>04</td>
        <td>05</td>
        <td>06</td>
        <td>07</td>
        <td>08</td>
        <td>09</td>
      </tr>
    </tbody>
  </table>
</div>

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神经病院院长
6楼-- · 2020-07-09 11:16

I found the solution to put scroll on top of table. Have look please: Demo in Fiddle Hope it would help.

    `.dataTables_scrollBody {
        transform:rotateX(180deg);
    }
    .dataTables_scrollBody table {
        transform:rotateX(180deg);
    }`

    $(document).ready(function() {
    $('#example').DataTable( {
            scrollX : 'TRUE',
        initComplete: function () {
            this.api().columns().every( function () {
                var column = this;
                var select = $('<select><option value=""></option></select>')
                    .appendTo( $(column.footer()).empty() )
                    .on( 'change', function () {
                        var val = $.fn.dataTable.util.escapeRegex(
                            $(this).val()
                        );

                        column
                            .search( val ? '^'+val+'$' : '', true, false )
                            .draw();
                    } );

                column.data().unique().sort().each( function ( d, j ) {
                    select.append( '<option value="'+d+'">'+d+'</option>' )
                } );
            } );
        }
    } );
    $('#example tfoot tr').insertAfter($('#example thead tr'));
} );
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