访问子html iframe中的javascript变量

Question

I have a parent document index.php that has <iframe src="editor.html" width="400" height="300"></iframe> Now file editor.html contains a javascript variable editor which I want to access in the parent window. I've tried to use what so called "session variable" which uses document window, but cannot access it.

The reason I must have two files like this is, the code editor fills the document. So that I have to put it in a separate page.

How to access this variable in child frame from the parent document?? Thanks

Answer 1

Give a name for the iframe, then:

var windowObjectInIframe = window.frames['frame_name'];

If editor is a global variable in the iframe, you can access it like so:

var editorInMainPage = windowObjectInIframe.editor;