Works cross-domain, but on same domain I get `Invalid target origin 'about:blank' in a call to 'postMessage'.`

Hey there,

When I first started using this library, I had my local app (my-app.dev) hosting the content, and I was loading the iframe on another domain (my-test-app.herokuapp.com) to make sure it worked cross-domain. To my delight, it worked immediately the first time. Yay!

But then I went to embed the iframe on the same domain, and I started getting this error about the targetOrigin being about:blank:

[iFrameSizer][Host page: ma8a3c1b436e7cd6fdc36f2a160e3c4e4d440ad87-container] [init] Sending msg to iframe[ma8a3c1b436e7cd6fdc36f2a160e3c4e4d440ad87-container] (ma8a3c1b436e7cd6fdc36f2a160e3c4e4d440ad87-container:8:false:true:32:true:true:null:bodyOffset:null:null:0:false:parent:scroll) targetOrigin: about:blank
iframeResizer.min.js:8 Uncaught SyntaxError: Failed to execute 'postMessage' on 'Window': Invalid target origin 'about:blank' in a call to 'postMessage'.

Not sure if this matters, but I’m hosting iframeResizer.min.js on S3, and I’m loading everything with // (vs. https:// or http://) to ensure protocols match.

Not sure where to go here, but I’ll keep hacking and report back what I uncover.

[ryana]

Ah! I was using HelloBar and it embeds an iframe with src="about:blank". I was calling window.iframeResize() and not using the selector option. When I add a class it works: iFrameResize({}, "iframe._my-special-widget-iframe")

Hope this helps someone else!

[davidjbradshaw]

Thanks for the follow up