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/ 14 Years ago, thu, june 17, 2010, 12:00:00
I'd like to overlay a div (or any element that'll work) over a table row (tr tag) that happens to have more than one column.
I have tried a few methods, which don't seem to work. I've posted my current code below.
I do get an overlay, but not directly over just the row. I tried setting the overlay top to $divBottom.css('top'), but that is always 'auto'.
So, am I on the right track, or is there a better way of doing it? Utilizing jQuery is fine as you can see.
If I am on the right track, how do I get the div placed correctly? Is the offsetTop an offset in the containing element, the table, and I need to do some math? Any other gotchas I'll run into with that?
$(document).ready(function() {
$('#lnkDoIt').click(function() {
var $divBottom = $('#rowBottom');
var $divOverlay = $('#divOverlay');
var bottomTop = $divBottom.attr('offsetTop');
var bottomLeft = $divBottom.attr('offsetLeft');
var bottomWidth = $divBottom.css('width');
var bottomHeight = $divBottom.css('height');
$divOverlay.css('top', bottomTop);
$divOverlay.css('left', bottomLeft);
$divOverlay.css('width', bottomWidth);
$divOverlay.css('height', bottomHeight);
$('#info').text('Top: ' + bottomTop + ' Left: ' + bottomLeft);
});
});#rowBottom { outline:red solid 2px }
#divBottom { margin:1em; font-size:xx-large; position:relative; }
#divOverlay { background-color:Silver; text-align:center; position:absolute; z-index:10000; opacity:0.5; }<script src=https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js></script>
<html>
<head>
<title>Overlay Tests</title>
</head>
<body>
<p align=center><a id=lnkDoIt href=#>Do it!</a></p>
<table width=100% border=0 cellpadding=10 cellspacing=3 style=position:relative>
<tr>
<td><p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p></td>
</tr>
<tr id=rowBottom>
<td><div id=divBottom><p align=center>This is the bottom text</p></div></td>
</tr>
<tr>
<td><p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p></td>
</tr>
</table>
<div id=divOverlay style=><p>This is the overlay div.</p><p id=info></p></div>
</body>
</html>
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