IE 8 HTML parsing error: Unable to modify the parent container element before the child element is cl

I. error message prompt
Under IE8
Message: HTML parsing error: Unable to modify the parent container element before the child element is closed (kb927917)
Row: 0
Character: 0
Code: 0
Uri: XXX

IE6/7
Internet Explorer cannot open the Internet site xxx

Ii. Background
1. Page a introduces page B through IFRAME
2. Page B loads the JS File A. js using the document. Write () method
3. Call the func function in A. js at the bottom of page B for initialization, and call the appendchild function to operate the parent page.

Iii. Solution
Cause: some Dom operations occur before the DOM tree is loaded, such as appendchild.
Problem location: When page B has not loaded the. js file, the parent page a is operated.
Solution: Change the initialization method to setTimeout (func, 0 );