If all the outputs in the web application are of the same type or class, you can easily use a script in the Firefox debugger (I will hope you are using Firebug).
There's a tab called console, there you can call jquery and list the results for the output fields.
If everything is in an h2 tag it would be this:
for(var i = 0; i < $('h2').length; i++) {
console.log($('h2')[i].innerHTML);
}
There are several other methods. Personally I find the Chrome console easier to use.