getElementById from iframe

Question

could someone help me to understand why this errors

document.getElementById(\"actContentToGet\").contentWindow.document.body.getElementById is not

Answer 1

Try removing the body.- getElementById() is a document. function.

Answer 2

Try changing this:

...contentWindow.document.body.getElementById(elementID)...

to this:

...contentWindow.document.getElementById(elementID)...

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Edit from comments: It's not removing that element because that's not how you remove elements. Try this:

var iframe = document.getElementById('actContentToGet');
var frameDoc = iframe.contentDocument || iframe.contentWindow.document;
var el = frameDoc.getElementById(elementID);
el.parentNode.removeChild(el);

See the documentation here.