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<!doctype html>
<meta charset="utf-8">
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<link rel="author" title="Joy Yu" href="mailto:joysyu@mit.edu">
<link rel="help" href="https://drafts.csswg.org/css-tables-3/#computing-the-table-width">
<style>
table {
border: 5px solid black;
}
table span {
display: inline-block;
vertical-align: top;
background: lime;
margin: 3px;
height: 100px;
width: 100px;
}
</style>
<main>
<h1>Dynamic Visibility collapse</h1>
<a href="https://drafts.csswg.org/css-tables-3/#computing-the-table-width">Spec</a>
<p>
Setting a column to visibility:collapse changes table width but not height.
Bottom table is identical to top except left column has been collapsed.
</p>
<table id="test">
<colgroup id="collapse"></colgroup>
<tbody>
<tr>
<td>
<span>row 1</span>
</td>
<td>
<span></span>
</td>
</tr>
<tr>
<td>
<span>row 2</span>
</td>
<td>
<span></span>
</td>
</tr>
<tr>
<td>
<span>row 3</span>
</td>
<td>
<span style="height:50px"></span>
</td>
</tr>
</tbody>
</table>
</main>
<script>
colgroup = document.getElementById("collapse");
colgroup.style.visibility = "collapse";
tests = [
[
document.getElementById('test').offsetHeight,
342,
"col visibility:collapse doesn't change table height",
],
[
document.getElementById('test').offsetWidth,
122,
"col visibility:collapse changes table width"
]];
for (i = 0; i< tests.length; i++) {
test(function()
{
assert_equals.apply(this, tests[i]);
},
tests[i][2]);
};
</script>
</html>
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