With web developer extensions, you can debug broken web pages and provide better feedback to web developers.
Safari includes built-in developer tools - you don't need to install anything to debug issues in the browser.
home page, Apple's documentation for using the Web Inspector Panel
keybinding: ⌘⌥i
Chrome includes built-in developer tools - you don't need to install anything to debug issues in the browser.
home page, using chrome developer tools documentation
Apple OS X keybinding: ⌘⌥i
(Cmd+Option+I
)
Windows keybinding: Ctrl+Shift+I
Once you're in, watch this handy YouTube video on the functionality of the tools.
home page, Toolbox documentation
Apple OS X keybinding: ⌘⌥i
(Cmd+Option+I
)
Windows keybinding: Ctrl-Shift-I
for advanced debugging, see weinre
You can debug issues on your new iPhone, but only with a connected computer - the built-in console was replaced in version 6.
Discovering Internet Explorer Developer Tools
keybinding: F12
keybinding: ⌘⌥i