[fidotron]

They won't though. All you see in web dev tools is the UI as all the actual clever stuff is still hidden away from you on servers.

[mercer]

With an increase of client-side apps combined with server api's this is less the case, though, isn't it?

I can imagine quite a few 'web apps' that won't try to actively obfuscate how their client app operates. In those cases having browser-based development tools makes it much easier to tinker with and inspect the app...

[findjashua]

Well, with most single-page apps, bulk of the logic is running on the client, with the backend just exposing a REST API.