I have a table. The only CSS I am adding to the standard Bootstrap library is the following to implement the sticky header:
.table-sticky th { background: #fff; position: sticky; top: -1px; z-index: 990; }
<div class="table-responsive p-0 mt-2"> <table class="table table-sm table-striped table-hover table-sticky"> <thead> <tr> <th>#</th> <th>Header</th> <th>Header</th> <th>Header</th> <th>Header</th> </tr> </thead> <tbody> <tr> <td>1,001</td> <td>Lorem</td> <td>ipsum</td> <td>dolor</td> <td>sit</td> </tr> <tr> <td>1,002</td> <td>amet</td> <td>consectetur</td> <td>adipiscing</td> <td>elit</td> </tr> </tbody> </table> </div>
The sticky header worked until I wrapped the table in the div.table-responsive
. How do I allow these to co-exist?
There's no way to co-exist a position: sticky
inside a .table-responsive
without re-implementing the latter.
My solution ended up to be using .table-responsive-sm
to refuse this trade-off when a responsive table is certainly not needed.
without any additionnal CSS, you can fix table head by removing table-responsive from the div and adding class="bg-white sticky-top border-bottom" class to table tag. Like this
<div class="table">
<table class="table">
<thead>
<tr>
<th class="bg-white sticky-top border-bottom">FirstName</th>
<th class="bg-white sticky-top border-bottom">LastName</th>
<th class="bg-white sticky-top border-bottom">Class</th>
</tr>
</thead>
<tbody>
<tr>
<td>John</td>
<td>Cooker</td>
<td>A1</td>
</tr>
<tr>
<td>David</td>
<td>Jeferson</td>
<td>A2</td>
</tr>
...
</table>
</div>
In this case you need to code it yourself. Following JS will do the job:
var element = document.getElementById("fixed-thead");
var parentElement = element.parentElement;
window.addEventListener('scroll', () => {
var coordinates = parentElement.getBoundingClientRect();
if (coordinates.y < 0) {
element.style.transform = 'translate3d(0, ' + (-coordinates.y) + 'px, 0)';
} else {
element.style.transform = 'translate3d(0,0,0)';
}
}
And in your table mark thead
with id="fixed-thead"
like this:
<thead id="fixed-thead">
I use translate3d
to enable hardware acceleration to make it smoother. If user uses wheel to scroll scroll event is triggering very ofter I recommend using debouncing of scroll events.
In case your table has column with fixed with you can use setting position: fixed
and top: 0
instead of translate3d
. But in case of a variable length translate3d
is preferred.
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