ruby-align property
Gets or sets a value that indicates how to align the ruby text content.
![]() ![]() |
Syntax
ruby-align: auto | left | center | right | distribute-letter | distribute-space | line-edge
Property values
A variable of type String that specifies or receives one of the following values:
auto-
Default. Browser determines how the ruby text is aligned. The recommended behavior for an ideographic (Asian character) ruby is to be aligned in the
distribute-spacemode. The recommended behavior for a Latin character ruby is to be aligned in thecentermode. left-
Ruby text is left-aligned with the base.
center-
Ruby text is centered within the width of the base. If the length of the base is smaller than the length of the ruby text, the base is centered within the width of the ruby text.
right-
Ruby text is right-aligned with the base.
distribute-letter-
Ruby text is evenly distributed across the width of the base if the width of the ruby text is smaller than the width of the base. If the width of the ruby text is at least the width of the base, the ruby text is center-aligned.
distribute-space-
Ruby text is evenly distributed across the width of the base if the width of the ruby text is smaller than the width of the base. White space precedes the first and follows the last character in the ruby text, equal to half the kerning of the ruby text. If the width of the ruby text is at least the width of the base, the ruby text is centered.
line-edge-
Ruby text is centered if it is not adjacent to a line edge. If it is adjacent to a line edge, the side of the ruby text lines up with the side of the base text.
CSS information
| Applies To | All elements |
|---|---|
| Media | visual |
| Inherited | no |
| Initial Value |
Standards information
- CSS3 Ruby Module, Section 4.2
Remarks
The ruby-align property specifies the alignment of the ruby text defined by the rt object, and is set on the ruby object.
Examples
This example uses the ruby-align attribute and the ruby-align property to set the alignment of the ruby text. It uses an inline style sheet to set the ruby-align attribute to right.
Code example: http://samples.msdn.microsoft.com/workshop/samples/author/dhtml/refs/rubyAlign.htm
<!DOCTYPE html>
<html>
<head>
<title>RT Sample</title>
<style>
a {
color: blue;
text-decoration: underline;
cursor: pointer;
}
.samplearea {
width: 120px;
text-align: center;
height: 300px;
background-color: #CFCFCF;
border: 1px solid;
border-top-color: #EFEFEF;
border-left-color: #EFEFEF;
border-right-color: #C0C0C0;
border-bottom-color: #C0C0C0;
}
</style>
</head>
<body>
<h1>rubyAlign Property Sample</h1>
<p>This sample uses the <strong>rubyAlign</strong> property to set the alignment of the ruby text.</p>
<div class="samplearea">
<ruby id="oRuby"><span style="font-family: Arial; font-size: 12pt;">Base text.</span><rt><span style="font-family: Arial; font-size: 8pt; color: red;">Ruby text</span></rt></ruby>
</div>
<p><em>The <strong>rubyAlign</strong> property supports the following possible values. Select one of the values to apply it to the <strong>RUBY</strong> object through script.</em></p>
<p>[ <a>auto</a> |
<a>left</a> |
<a>center</a> |
<a>right</a> |
<a>distribute-letter</a> |
<a>distribute-space</a> |
<a>line-edge</a> ]</p>
<script>
var allAnchorElements = document.getElementsByTagName('a');
for (var i = 0; i < allAnchorElements.length; i++) {
allAnchorElements[i].addEventListener('click', fnSwitch, false);
}
function fnSwitch(evt) {
document.getElementById('oRuby').style.rubyAlign = evt.srcElement.textContent;
}
</script>
</body>
</html>
See also

