[webkit-dev] How to catch JS exceptions/log messages from a WebView?

[Todd Ditchendorf]

In a Cocoa app which embeds a WebView, what is the best way to catch  
all JS exceptions from the WebView which are thrown and are not caught  
within JS itself?

For example, I want to implement something similar to the JavaScript  
Console in the Safari debug menu.

Also, how do you capture statements sent to console.log(),  
console.warn() and console.error() within a WebView?

thanks!

todd ditchendorf