Well, here you are a next post about the boring scrolling table with fixed header and footer. This topic is comes from rigid structure of HTML. The source problem was to show really huge table overflowing the screen width as the height. My wish was also to fix the header at the top of the table and so its copy at the bottom of it.
After an intensive googling and testing lot of guaranteed codes I found next deep-nested problems: - the header and footer do not keep the cell-spacing of table body while tbody is separately scrolled - the tbody rows overwrite the header - the vertical scrolling of tbody can be hardly combined with horizontal scrolling of the whole table (including header and footer).
I started to write some kind of hack to overcome it but it depends on used browser, too.
<html><head><meta charset="utf-8"><title>pokus</title><script>var tab=
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]; var _tr_ =document.createElement('tr');var _td_ =document.createElement('td');
function fill_table()
{ var thd=document.getElementById('hot'); var tbd=document.getElementById('bot');
var poc=tab.length;var hada=thd.firstChild.firstChild;var dada=tbd.firstChild.firstChild;
for(var klic in tab[0]){ var hela=document.createElement("th"); hela.innerHTML=klic; hada.appendChild(hela);};
for(var i=0;i< poc;i++) // after header assembled the table rows are cloned and filled
{ var ntr=_tr_.cloneNode(false); // clone free row
for( klic in tab[i]) // with each table row clone free cell and fill it
{ var ntd=_td_.cloneNode(false); ntd.innerHTML=tab[i][klic]; ntr.appendChild(ntd);
} tbd.firstElementChild.appendChild(ntr); // show next row
} var lol=tbd.rows[0].cells.length; var maxirka=0;
for (var k=0;k < lol;k++){ maxirka += thd.rows[0].cells[k].style.width=tbd.rows[0].cells[k].offsetWidth;};
thd.style.width=maxirka;
var tfd=document.getElementById('iak').appendChild(thd.cloneNode(true));tfd.id='fot';
var tfh=tfd.offsetHeight; var tih=document.getElementById('iak').offsetHeight;
tbd.style.height=tih-tfh-tfh-15;tbd.firstElementChild.style.height=tih-tfh-tfh-20;
}
</script></head><body onLoad="fill_table()"><br>
<div id="iak" style="overflow:scroll;overflow-y:hidden; width:60%; height:60%;border:#888888 1px solid; " >
<table id="hot" border="1" cellpadding="0" cellspacing="0" style="table-layout:fixed;border-collapse:collapse;"><thead><tr></tr></thead></table>
<table id="bot" border="1" cellpadding="5" cellspacing="0" style="border-collapse:collapse; height:200px; white-space: nowrap;">
<tbody style="display:block; width:100%; height:200px; overflow:scroll; overflow-x:hidden;"></tbody></table>
</div>
</body>
</html>
The solution is based on creating three tables: header-table, data-table, footer-table (clone of the header-table) , enclosed in horizontally scrolled DIV. After the header-table and data-table are built, the auto-generated cell-with of the data-table is copied to the corresponding cell of header-table. Some disadvantage is that the vertical scroll-bar is hidden on the right side of the table, but you can vertically scroll with mouse-wheel or show the bar by horizontal scroll into full right. May here someone shows some better solution based on CSS, what will be really fine, but it could be better if W3C group were add the normal scrolling behavior of the definition into the next HTML version.
Hm, this post was written as a functional sample of html scrollable table with fixed header and footer always visible. Not less, nor more, neither the nice decoration. And the basic task was to write it as easy as it possible. As this table is intented to be a part of more complex html page, with formulas and other tables, hence globals CSS are excluded. After a heavy development of HTML features in last 30 years by W3C, I ecpected something like:
<table style="overflow:scroll; overflow-y:hidden; display:@in_parent_element_only">
<thead style="'header cells corresponding with table cells'">
<row><!--single row header --></row></thead>
<tbody style="overflow:scroll; overflow-x:hidden; 'full_view_table'">
<row><!--lot of rows --></row></tbody>
<tfoot ><row><!--copy of header --></row></tfoot>
</table>
Unfortunately, this is supposed to bee a too much simple way - realy I tested lot of style combinations but either the THEAD and TBODY cells are not related (why?), or the THEAD, TBODY, TFOOT rows ovelaps or displace each other and vice versa.
I know, that a very nice result can be hunt by heavy computing, positioning, and styling, but I insist on simplicity and functionality, preferring information over ornaments.
If somebody knows what combination of inline style=".." can guarantee the good result regardless on browser type, please try to write here a piece of well commented code. Not only for me, but for the comunity, just as I showed here my primitive way.
