Make table auto scroll vertically via HTML & CSS - html

Question

I have a simple bootstrap table that I am trying to have vertically scroll automatically. The reason for this, is that the table will be displayed on a screen and the table could have 10 items in it or 100. So I would like it to auto scroll vertically so the user does not have to do it manually. After it reaches the end, it will just reset and start back from the top...
This is my markup thus far:
<div class="table-responsive" style="height: 700px; overflow: auto;">
<table class="table table-bordered table-hover">
<thead>
<tr>
<th style="text-align: left; font-size: 23px;">#</th>
<th style="text-align: left; font-size: 23px;">Name</th>
<th style="text-align: left; font-size: 23px;">Description</th>
<th style="text-align: left; font-size: 23px;">Date</th>
</tr>
</thead>
<tbody>
<tr class="danger">
<td style="text-align: left; font-size: 16px;">1213</td>
<td style="text-align: left; font-size: 16px;">John Doe</td>
<td style="text-align: left; font-size: 16px;">my short description</td>
<td style="text-align: left; font-size: 16px;">Today's Date</td>
</tr>
</tbody>
</table>
</div>
NOTE: I am hoping this can be achieved with only HTML and CSS.
Any suggestions?

Answer 1

JS (or jQuery) is needed to get the actual element height and scrollHeight and perform the animation on those values
var $el = $(".table-responsive");
function anim() {
var st = $el.scrollTop();
var sb = $el.prop("scrollHeight")-$el.innerHeight();
$el.animate({scrollTop: st<sb/2 ? sb : 0}, 4000, anim);
}
function stop(){
$el.stop();
}
anim();
$el.hover(stop, anim);
.table-responsive{
height:180px; width:50%;
overflow-y: auto;
border:2px solid #444;
}.table-responsive:hover{border-color:red;}
table{width:100%;}
td{padding:24px; background:#eee;}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="table-responsive">
<table class="table table-bordered table-hover">
<thead>
<tr><th>#</th></tr>
</thead>
<tbody>
<tr><td>1</td></tr>
<tr><td>2</td></tr>
<tr><td>3</td></tr>
<tr><td>4</td></tr>
<tr><td>5</td></tr>
<tr><td>6</td></tr>
<tr><td>7</td></tr>
<tr><td>8</td></tr>
<tr><td>9</td></tr>
<tr><td>10</td></tr>
</tbody>
</table>
</div>

Answer 2

I highly recommend using using javascript for this. I tried this using CSS only once and then promptly abandoned the idea, but it is theoretically possible. The following demo is not tested on all browsers, has huge compatibility issues, and was the jankiest thing ever on Safari. Moral of the story: use javascript.
#import url(https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css);
.table-responsive {
overflow-x: hidden;
}
table.table {
animation: ani linear 1s alternate infinite;
}
.table-responsive:hover {
overflow: auto;
}
.table-responsive:hover table.table {
animation: none ;
}
#keyframes ani {
0% { margin-left: 0; transform: translate3d(0%, 0, 0);}
25% { margin-left: 0; transform: translate3d(0%, 0, 0);}
75% { margin-left: 100%; transform: translate3d(-100%, 0, 0);}
100% { margin-left: 100%; transform: translate3d(-100%, 0, 0);}
}
<div class="table-responsive">
<table class="table table-bordered table-hover">
<thead>
<tr>
<th style="text-align: left; font-size: 23px;">#</th>
<th style="text-align: left; font-size: 23px;">Name</th>
<th style="text-align: left; font-size: 23px;">Description</th>
<th style="text-align: left; font-size: 23px;">Date</th>
<th style="text-align: left; font-size: 23px;">Date</th>
<th style="text-align: left; font-size: 23px;">Date</th>
<th style="text-align: left; font-size: 23px;">Date</th>
<th style="text-align: left; font-size: 23px;">Date</th>
</tr>
</thead>
<tbody>
<tr class="danger">
<td style="text-align: left; font-size: 16px;">1213</td>
<td style="text-align: left; font-size: 16px;">John Doe</td>
<td style="text-align: left; font-size: 16px;">my short description</td>
<td style="text-align: left; font-size: 16px;">Today's Date</td>
<td style="text-align: left; font-size: 16px;">Today's Date</td>
<td style="text-align: left; font-size: 16px;">Today's Date</td>
<td style="text-align: left; font-size: 16px;">Today's Date</td>
<td style="text-align: left; font-size: 16px;">Today's Date</td>
</tr>
</tbody>
</table>
</div>
<div class="table-responsive">
<table class="table table-bordered table-hover">
<thead>
<tr>
<th style="text-align: left; font-size: 23px;">#</th>
<th style="text-align: left; font-size: 23px;">Name</th>
<th style="text-align: left; font-size: 23px;">Description</th>
<th style="text-align: left; font-size: 23px;">Date</th>
</tr>
</thead>
<tbody>
<tr class="danger">
<td style="text-align: left; font-size: 16px;">1213</td>
<td style="text-align: left; font-size: 16px;">John Doe</td>
<td style="text-align: left; font-size: 16px;">my short description</td>
<td style="text-align: left; font-size: 16px;">Today's Date</td>
</tr>
</tbody>
</table>
</div>

Answer 3

The code below will not reset and start back from the top the table as asked in the question, but this will help some future readers who trying to scroll and loop the table rows automatically with a fixed header.
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
<script type="text/javascript">
$.fn.infiniteScrollUp=function(){
var self=this,kids=self.children()
kids.slice(20).hide()
setInterval(function(){
kids.filter(':hidden').eq(0).fadeIn()
kids.eq(0).fadeOut(function(){
$(this).appendTo(self)
kids=self.children()
})
},1000)
return this
}
$(function(){
$('tbody').infiniteScrollUp()
})
</script>
<title>infiniteScrollUp</title>
</head>
<body>
<table>
<colgroup><col /><col /><col /><col /><col /><col /></colgroup>
<thead>
<tr><th>a</th><th>b</th><th>c</th><th>d</th><th>e</th><th>f</th></tr>
</thead>
<tbody>
<tr><td>1a</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1b</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1c</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1d</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1e</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1f</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1g</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1h</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1i</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1j</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1k</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1l</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1m</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1n</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1o</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1p</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1q</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1r</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1s</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1t</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1u</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1v</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1w</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1x</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1y</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
<tr><td>1z</td><td>2</td><td>3</td><td>4</td><td>5</td><td>6</td></tr>
</tbody>
</table>
</body>
</html>