<!DOCTYPE html>
<title>CSSStyleDeclaration setter works when a node changes document</title>
<link rel="author" title="Raphael Kubo da Costa" href="[email protected]">
<link rel="help" href="https://drafts.csswg.org/cssom/#dom-cssstyledeclaration-camel-cased-attribute">
<link rel="help" href="https://drafts.csswg.org/cssom/#dom-cssstyledeclaration-webkit-cased-attribute">
<link rel="help" href="https://drafts.csswg.org/cssom/#dom-cssstyledeclaration-dashed-attribute">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="original-div" style="background-color:green; height: 100px; width: 100px"></div>
<script>
// Create and return a 100x100 red <div>.
function createDiv(containerDocument) {
const div = containerDocument.createElement("div");
div.style.backgroundColor = "red";
div.style.height = "100px";
div.style.width = "100px";
containerDocument.body.appendChild(div);
return div;
}
async_test(t => {
const iframeElement = document.createElement("iframe");
iframeElement.addEventListener("load", t.step_func_done(() => {
const originalDiv = document.getElementById("original-div");
const newDiv = createDiv(iframeElement.contentDocument);
assert_not_equals(newDiv.ownerDocument, document,
"The new <div> belongs to the iframe, not the main document");
document.body.insertBefore(newDiv, originalDiv);
assert_equals(newDiv.ownerDocument, document,
"The new <div> now belongs to the main document");
newDiv.style.backgroundColor = "blue";
assert_equals(window.getComputedStyle(newDiv).getPropertyValue("background-color"),
"rgb(0, 0, 255)",
"The new <div>'s background-color is blue");
document.body.removeChild(iframeElement);
newDiv.style.backgroundColor = "green";
assert_equals(window.getComputedStyle(newDiv).getPropertyValue("background-color"),
"rgb(0, 128, 0)",
"The new <div>'s background-color is green");
}));
document.body.appendChild(iframeElement);
}, "Changing the style of a node that switched documents works");
</script>
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