blob: a57c2657c85f3fb765c078a0ac6da87e64680ae5 [file] [log] [blame]
<head>
<script>
function frameLoaded()
{
// create lots of objects to force a garbage collection
var i = 0;
var s;
while (i < 5000) {
i = i+1.11;
s = s + " ";
}
var output= document.getElementById("output");
output.innerHTML += spanB.customProperty + "<BR>";
output.innerHTML += spanB + "<BR>";
output.innerHTML += spanB.parentNode + "<BR>";
output.innerHTML += spanB.ownerDocument + "<BR>";
if (window.layoutTestController)
layoutTestController.notifyDone();
}
function doit()
{
var frame = document.getElementById("frame");
spanB = frame.contentDocument.getElementById("span-B");
spanB.customProperty = "B";
frame.onload = frameLoaded;
frame.src = "about:blank";
}
if (window.layoutTestController) {
layoutTestController.dumpAsText();
layoutTestController.waitUntilDone();
}
</script>
</head>
<body onload="doit()">
<div style="border: 1px solid red">
<p>
This test verifies that DOM documents are protected against garbage
collection but without necessarily keeping all their children alive,
so long as any node in the document is reachable.
</p>
<p>
The output should be the following pieces of text on lines by
themselves: "B", "[object HTMLElement]", "null", "[object HTMLDocument]".
</p>
</div>
<div id="output">
</div>
<iframe id="frame" src='data:text/html,<div id="div"><span id="span-A"><span id="span-B"><span id="span-C">original span</span></span></span></div>'>
</body>