| <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> |
