iframe parent window off the child window method.

Why 80% of the code can not do farming architect? >>>  

1, HTML syntax: <iframes name = "myframe" the src = "child.html in"> </ iframes>
2, the parent window calls the child window: myFrame.window.functionName ();

Reproduced in: https: //my.oschina.net/cjkall/blog/195914