Can javascript running inside an iframe affect the main page?

Question

Partial Code:

My below code pulls a query from my DB and then uses inner.HTML = to display the data inside a div. It works fine in it original use....

Howeve

Answer 1

You can do it! Read here for more info

You can affect the document with contains the iframe by setting and getting variables from the window element:

// normally you use...
var whatever = "value";

// use the window object instead, which is shared 
// between the iframe and the parent
window.whatever = "value";

The other thing you should know is that you can access the main document via the parent object

inside the iframe you can use...

parent.someattr;

// or try this
parent.getElementById('some_element');

Answer 2

I think what you want is:

parent.getElementById('posts').innerHTML = 'why doth this faileth?';

Answer 3

The part in the iframe isn't considered the same document.

Answer 4

you have to use parent.