UIWebView with js Debugger.

UIWebViewWithDebug.m

/** @class UIWebViewWithDebug UIWebView with additional js error on DEBUG.
 * Tested on iPad with 4.3.5 & 5.0
 */
@interface UIWebViewWithDebug : UIWebView {} @end

#ifdef DEBUG

@class WebView;
@class WebScriptCallFrame;
@class WebFrame;


@interface WebView 
- (void) setScriptDebugDelegate: (id) delegate;
@end

@interface WebScriptCallFrame
- (NSString *) functionName;
@end 
#endif

@implementation UIWebViewWithDebug 


#ifdef DEBUG

#warning Potential Reject

- (void)    webView: (WebView *) webView   
 exceptionWasRaised: (WebScriptCallFrame *) frame
           sourceId: (int) sid
               line: (int) line
        forWebFrame: (WebFrame *) webFrame
{
    NSString *url = [self.request.URL absoluteString];
    NSString *errorString = [NSString stringWithFormat: @"Exception at %@, in function: %@ line: %@", url , [frame functionName], [NSNumber numberWithInt: line]];
    NSLog(errorString);
}

- (void) webView: (id) sender didClearWindowObject: (id) windowObject forFrame: (WebFrame*) frame
{
    [sender setScriptDebugDelegate: self];
}

#endif

@end