Comments on: How To Inject JavaScript Functions Into a UIWebView

By: Nick

Nick — Mon, 22 Aug 2011 05:34:14 +0000

@Daniel: You can create an event in JavaScript of the type KeyboardEvent and then dispatch it using the dispatchEvent() method.

By: Daniel

Daniel — Sat, 20 Aug 2011 18:57:35 +0000

Can I use any of this to send a spacebar pressed event and arrow key event to a uiwebview? In the way you can pause/play hulu or youtube with the spacebar on a computer I would like to do the same with a button floating on top of my uiwebview.
Thanks,
noob

By: Dennis

Dennis — Tue, 16 Aug 2011 15:41:39 +0000

Nick,

Thanks for this post – I found it very useful. I am wondering if anyone knows if you can put an asychronous call in the javascript (e.g. out to a web service) and get the result back in the return value of stringByEvaluatingJavaScriptFromString? In this case I can’t control if the call out is sync or asynch.

By: Adam

Adam — Tue, 02 Aug 2011 15:49:14 +0000

injecting
var myFunction = function(){ /*function here*/ };
also works (which I include from a js file in my app bundle)

By: Andrew Miner

Andrew Miner — Wed, 15 Jun 2011 00:18:20 +0000

Neat trick, but I can’t seem to get it to work! I can get my new `script` element to show up when I inspect the `innerHTML` of the `head` element, but whenever I try to access the function, it doesn’t seem to be defined (e.g., `typeof(MyFunction)` returns “undefined”). Has anyone run into that problem / have a workaround?

By: richtaur

richtaur — Mon, 10 Jan 2011 08:59:54 +0000

Dang I was wanting to go the other way: JavaScript calling Objective-C code. I’ll keep looking. Still a helpful read, thanks!

By: ashish

ashish — Thu, 02 Dec 2010 03:49:55 +0000

can u post complate example of javascript rollover image (means change image) with output ?

By: beginner

beginner — Fri, 19 Nov 2010 12:46:41 +0000

not sure what i’m doing it correct or not. i’m trying to display a custom font in UIWebView.

[webView stringByEvaluatingJavaScriptFromString:@"myFunction();"];

how to call new myFunction();
??
thanks

By: Nick

Nick — Tue, 02 Nov 2010 05:37:56 +0000

@shane: As far as I know this is not possible. UIWebView can display documents like PDF, PPT, etc., but those documents are not part of the browser DOM so there’s no way to access any data from the document.

By: Andrew

Andrew — Mon, 01 Nov 2010 02:55:49 +0000

Thank you. Exactly what I was looking for.