Get element by Id from another page

Question

I need to change content of page1 if page2 contain specified element. This code works great if I get id from the same page

if (document.getElementById(\"page         


        

Answer 1

Think this will work...

var iframe = document.getElementById("iframeId"),
    doc = getFrameDocument(iframe);

doc.getElementById("page2_element_id"); // [DOM Element]

function getFrameDocument(iframe){
    return iframe.contentDocument ? iframe.contentDocument : iframe.contentWindow.document;
}

---

return cond ? a : b means:

if ( cond ) {
    return a;
}
else {
    return b;
}