Source code
Revision control
Copy as Markdown
Other Tools
Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/cssom/computed-style-001.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<title>CSS Test: getComputedStyle</title>
<link rel="author" title="Bear Travis" href="mailto:betravis@adobe.com">
<meta name="flags" content="dom">
<meta name="assert" content="getComputedStyle returns a readonly CSSStyleDeclaration with resolved values">
<script src="/resources/testharness.js" type="text/javascript"></script>
<script src="/resources/testharnessreport.js" type="text/javascript"></script>
<style>
#outside {
width: 200px;
height: 200px;
}
#outside div {
font-size: 100px;
}
#inside {
width: 50%;
height: 100px;
}
</style>
</head>
<body>
<noscript>Test not run - javascript required.</noscript>
<div id="log"></div>
<div id="outside"><div id="inside"></div></div>
<script type="text/javascript">
var outer = document.getElementById("outside");
var inner = document.getElementById("inside");
var innerStyle;
// do not allow modifications to a computed CSSStyleDeclaration
test(function() {
innerStyle = window.getComputedStyle(inner);
assert_throws_dom( "NO_MODIFICATION_ALLOWED_ERR",
function() { innerStyle.cssText = "color: blue;"; },
"do not allow setting cssText on a readonly CSSStyleDeclaration");
assert_throws_dom( "NO_MODIFICATION_ALLOWED_ERR",
function() { innerStyle.setProperty("color", "blue"); },
"do not allow calling setProperty on a readonly CSSStyleDeclaration");
assert_throws_dom( "NO_MODIFICATION_ALLOWED_ERR",
function() { innerStyle.color = "blue"; },
"do not allow setting a property on a readonly CSSStyleDeclaration");
}, "read_only");
// Directly set properties are resolved
test(function() {
assert_equals(innerStyle.getPropertyValue("height"), "100px");
}, "property_values");
// Inherited properties are resolved
test(function() {
assert_equals(innerStyle.getPropertyValue("font-size"), "100px");
}, "inherited_property_values");
// Relative properties are resolved
test(function() {
assert_equals(innerStyle.getPropertyValue("width"), "100px");
}, "relative_property_values");
</script>
</body>
</html>