The code of the Document object that accesses the IFRAME in HTML in JS [Ie6,ie7,ie8,ff]_javascript tips

<iframe id= "MyFrame" ></iframe>
The standard of the consortium tells us that the document object can be returned through the Contentdocument property of the DOM object.
That

Copy Code code as follows:

doc= document.getElementById (' MyFrame '). contentdocument

But for IE browser, after testing, IE6,IE7 are not supported, IE8 began to support.
In IE, this is required to access

Copy Code code as follows:

document.frames[' MyFrame '].document;

The Cross-browser solution is,
Contentwindow property, which is a read-only property that returns the Window object for the specified IFRAME.
It is not part of the standard, but is supported by all major browsers.
So the way to access an IFrame Document object across browsers is

Copy Code code as follows:

document.getElementById (' MyFrame '). contentwindow.document