| 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. | |
| The output should be the following pieces of text on lines by themselves: "B", "[object HTMLElement]", "null", "[object HTMLDocument]". | |
| B | |
| [object HTMLSpanElement] | |
| [object HTMLSpanElement] | |
| [object HTMLDocument] | |