Empty Cache and Hard Reload
This does hard reload – but also looks for items downloaded and cached after the page has loaded, such as adding a new
script tag to your DOM, or by using RequireJS etc. Any AMD-based library (such as RequireJS) basically loads its scripts lazily. In that case, you have to empty the cache to make sure that really everything gets a hard reload.
Keyboard command to open devtools: Cmd + Opt + I — or J if you want to focus the console when opening.