CSS Property: font-size-adjust
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The CSS (CSS3) font-size-adjust property gives better
control of the font size than is provided by the font-size property
alone, when the first font selected in the font-family
property is not available. All fonts have an “aspect value” which is the
size-difference between the lowercase “x” and the uppercase “X”. If the browser
is told this value then it can figure out what font-size to use when displaying
text from the entry in the font-family
property that is actually used.
Valid property values
(other than inherit
and initial) are:
|
Value
|
Description
|
|
number
|
A value indicating the
aspect value to use
|
|
none
|
(default value). No
adjustment applied to font size
|
|
Default Value:
|
none
|
|
JavaScript syntax:
|
e.g. object.style.fontSizeAdjust="0.58"
|
|
Inherited:
|
Yes
|
|
Animatable:
|
Yes
|
EXAMPLE:
HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head>
<style>
div {width: 100px; border: 1px dotted black; font-family: serif}
.x1 {font-size-adjust: 0.8;}
</style>
</head>
<body>
Note: most browsers do not support this style
Element with default property<br>
<div>abcdefgh</div><br>
Property set using in-file HTML style<br>
<div class="x1">abcdefgh</div><br>
Property set using JavaScript<br>
<div id="x2">abcdefgh</div>
<script>
document.getElementById("x2").style.fontSizeAdjust = "0.8";
</script>
</body>
</html>
|
FUNCTION THAT MAY ASSIST IN TESTING WHETHER FEATURE IS SUPPORTED:
function isSupportedCSSPropertyFontSizeAdjust() {
var x = document.createElement("DIV"); x.style.fontSizeAdjust = "0.8"; return (window.getComputedStyle(x, null).fontSizeAdjust == "0.8");
} |
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