The chrome task manager (hotkey Shift+Esc) is good for killing tabs
For large pages where source changes cause problems I will sometimes put logic inside conditional breakpoints. It's not great for huge changes (though you technically can put a lot of code in there) but for small things like quickly sanitizing null inputs it works fine.
For large pages where source changes cause problems I will sometimes put logic inside conditional breakpoints. It's not great for huge changes (though you technically can put a lot of code in there) but for small things like quickly sanitizing null inputs it works fine.