You probably know about Firebug Lite, but this either requires you to already have the bookmarklet, or include the script in the page. Although Firebug Lite is a great tool for more in depth debugging, it can be tedious for simple tasks (eg. “What’s the value of that property?”).
Fortunately, there is a simpler way. Do you remember the 2000 era and the
For instance, to find out the value of the global variable
foo, you just type in the address bar
Of course these URIs are a no-no for websites, but they can be handy for simple debugging in browsers that don’t support a console. ;)