How to access JS function in CPWebView

[Todd Freese]

How do I call into and get a return value for a JS function on a web page loaded inside a CPWebView?

I searched the archives and found a bunch of postings for going the other way (Access a capp object from the webpage). 

Todd

[Todd Freese]

I found this:

CPLog([[webView windowScriptObject] evaluateWebScript:"getMarkList()"]);

However, [webView windowScriptObject] is undefined.

This is called after the page has loaded in the CPWebView.

T

[Ross Boucher]

Is your page on the same origin? If not, you won't be able to communicate with it easily through a frame, you'd be better researching window.postMessage.

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[CappCoder]

I've done it.

Use [webView DOMWindow] to  access the window object. You can then call whatever function you want. You will run into cross origin issues however depending on your requirements. You will then have to use HTML5 postMessage APIs which don't work all that great in IE 9 . 

[Todd Freese]

Thanks of all the suggestions. I got it working great.

This post really helped me out:

https://groups.google.com/forum/?fromgroups#!searchin/objectivej/CPWebView/objectivej/H5Zykz8ecOw/HpS0BWYAnBYJ

Todd