alternative to cross-domain javascripting?

Question

currently i am relying on a proxy script to handle this problem of Single Origin Policy. it is slow, and creates overhead. Not to mention, javascript is not rendered.

is there a working alternative out there?

Answer 1

If you can provide a callback name as a parameter to the service providing the JavaScript code in question, then you can append a script tag to your document, with a src attribute pointing to the service call. Otherwise, you're out of luck.

Answer 2

Use an iframe and try window.postMessage(message, origin) (it would be parent.postMessage from the iframe and iframeElement.contentWindow.postMessage from the top page) for all of the latest major browsers (Firefox, IE, Safari, Chrome, etc.) and changing/polling window.name for old browsers.