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<!DOCTYPE html>
<title>Document.body</title>
<link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-document-body">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
function createDocument() {
var doc = document.implementation.createHTMLDocument("");
doc.removeChild(doc.documentElement);
return doc;
}
test(function() {
var doc = createDocument();
assert_equals(doc.body, null);
}, "Childless document");
test(function() {
var doc = createDocument();
doc.appendChild(doc.createElement("html"));
assert_equals(doc.body, null);
}, "Childless html element");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var b =
html.appendChild(doc.createElement("body"));
html.appendChild(doc.createElement("frameset"));
assert_equals(doc.body, b);
}, "Body followed by frameset inside the html element");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var f =
html.appendChild(doc.createElement("frameset"));
html.appendChild(doc.createElement("body"));
assert_equals(doc.body, f);
}, "Frameset followed by body inside the html element");
test(function() {
var doc = createDocument();
var html =
doc.appendChild(doc.createElementNS("http://example.org/test", "html"));
html.appendChild(doc.createElement("body"));
html.appendChild(doc.createElement("frameset"));
assert_equals(doc.body, null);
}, "Body followed by frameset inside a non-HTML html element");
test(function() {
var doc = createDocument();
var html =
doc.appendChild(doc.createElementNS("http://example.org/test", "html"));
html.appendChild(doc.createElement("frameset"));
html.appendChild(doc.createElement("body"));
assert_equals(doc.body, null);
}, "Frameset followed by body inside a non-HTML html element");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
html.appendChild(
doc.createElementNS("http://example.org/test", "body"));
var b = html.appendChild(doc.createElement("body"));
assert_equals(doc.body, b);
}, "Non-HTML body followed by body inside the html element");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
html.appendChild(
doc.createElementNS("http://example.org/test", "frameset"));
var b = html.appendChild(doc.createElement("body"));
assert_equals(doc.body, b);
}, "Non-HTML frameset followed by body inside the html element");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var x = html.appendChild(doc.createElement("x"));
x.appendChild(doc.createElement("body"));
var body = html.appendChild(doc.createElement("body"));
assert_equals(doc.body, body);
}, "Body inside an x element followed by a body");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var x = html.appendChild(doc.createElement("x"));
x.appendChild(doc.createElement("frameset"));
var frameset = html.appendChild(doc.createElement("frameset"));
assert_equals(doc.body, frameset);
}, "Frameset inside an x element followed by a frameset");
// Root node is not a html element.
test(function() {
var doc = createDocument();
doc.appendChild(doc.createElement("body"));
assert_equals(doc.body, null);
}, "Body as the root node");
test(function() {
var doc = createDocument();
doc.appendChild(doc.createElement("frameset"));
assert_equals(doc.body, null);
}, "Frameset as the root node");
test(function() {
var doc = createDocument();
var body = doc.appendChild(doc.createElement("body"));
body.appendChild(doc.createElement("frameset"));
assert_equals(doc.body, null);
}, "Body as the root node with a frameset child");
test(function() {
var doc = createDocument();
var frameset = doc.appendChild(doc.createElement("frameset"));
frameset.appendChild(doc.createElement("body"));
assert_equals(doc.body, null);
}, "Frameset as the root node with a body child");
test(function() {
var doc = createDocument();
doc.appendChild(doc.createElementNS("http://example.org/test", "body"));
assert_equals(doc.body, null);
}, "Non-HTML body as the root node");
test(function() {
var doc = createDocument();
doc.appendChild(doc.createElementNS("http://example.org/test", "frameset"));
assert_equals(doc.body, null);
}, "Non-HTML frameset as the root node");
test(function() {
assert_not_equals(document.body, null);
assert_true(document.body instanceof HTMLBodyElement, "should be HTMLBodyElement");
assert_equals(document.body.tagName, "BODY");
}, "existing document's body");
var originalBody = document.body;
test(function() {
assert_throws(new TypeError(), function() {
document.body = "text"
})
assert_equals(document.body, originalBody);
}, "Setting document.body to a string.")
test(function() {
assert_throws("HierarchyRequestError", function() {
document.body = document.createElement("div")
})
assert_equals(document.body, originalBody);
}, "Setting document.body to a div element.")
test(function() {
var doc = createDocument();
assert_throws("HierarchyRequestError", function() {
doc.body = doc.createElement("body")
})
assert_equals(doc.body, null);
}, "Setting document.body when there's no root element.")
test(function() {
var doc = document.implementation.createHTMLDocument();
var new_body = doc.createElement("body");
assert_true(new_body instanceof HTMLBodyElement, "should be HTMLBodyElement");
assert_equals(new_body.tagName, "BODY");
doc.body = new_body;
assert_equals(doc.body, new_body);
}, "Setting document.body to a new body element.");
test(function() {
var doc = document.implementation.createHTMLDocument();
var new_frameset = doc.createElement("frameset");
assert_true(new_frameset instanceof HTMLFrameSetElement, "should be HTMLFrameSetElement");
assert_equals(new_frameset.tagName, "FRAMESET");
doc.body = new_frameset;
assert_equals(doc.body, new_frameset, "test6-3, append frameset to a new document");
}, "Setting document.body to a new frameset element.");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var f =
html.appendChild(doc.createElement("frameset"));
assert_equals(doc.body, f);
var b = doc.createElement("body");
doc.body = b;
assert_equals(f.parentNode, null,
"Frameset should have been removed from the tree");
assert_equals(doc.body, b, "Body should be the new doc.body");
}, "Setting document.body to a body will replace an existing frameset if there is one.");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var b =
html.appendChild(doc.createElement("body"));
assert_equals(doc.body, b);
var f = doc.createElement("frameset");
doc.body = f;
assert_equals(b.parentNode, null,
"Body should have been removed from the tree");
assert_equals(doc.body, f, "Frameset should be the new doc.body");
}, "Setting document.body to a frameset will replace an existing body if there is one.");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var b =
html.appendChild(doc.createElement("body"));
var f1 = html.appendChild(doc.createElement("frameset"));
assert_equals(doc.body, b);
var f2 = doc.createElement("frameset");
doc.body = f2;
assert_equals(b.parentNode, null,
"Body should have been removed from the tree");
assert_equals(f1.parentNode, html,
"Frameset following body should still be in the tree.");
assert_equals(doc.body, f2, "New frameset should be the new doc.body");
assert_equals(f2.nextSibling, f1, "New frameset should have replaced the body");
}, "Setting document.body to a frameset will replace the first existing body/frameset.");
</script>
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