Javascript iframe operations are compatible with various browsers

I encountered iframe related problems during the project. The business is very simple. In fact, when you operate a form inside the iframe, a function of the parent form is called. So I wrote two simple htm pages for testing. The popular method on the Internet always reports an error in Google browsers, and it is impossible to get through... SyntaxHighlighter. all ();

I encountered iframe related problems during the project. The business is very simple. In fact, when you operate a form inside the iframe, a function of the parent form is called. So I wrote two simple htm pages for testing. The popular methods on the Internet always report errors in Google browsers and fail.

The code for parent.html on the parent page is as follows:

[Html] 
<Br/>