nwittwer
commented
6 years ago Looks like this is possible in NWJS if you're trying to open DevTools for a specific WebView. This means the current iFrames would need to be switched to WebView. Not sure about the performance, functional differences. http://docs.nwjs.io/en/latest/References/webview%20Tag/
If you're using the app in fullscreen or fullscreen next to another window, opening DevTools will create a new popup window, separate from the app. This causes DevTools to show up in a different space on MacOS—which is very frustrating to work with. It would make more sense to see the DevTools inside the same window (or at least to have the choice, like you're used to in Chrome).
Case 1: You want to select a certain node inside of a frame, so you want to right-click it and go to "Inspect element", which takes you right to it in DevTools.
Case 2: You want the DevTools to just be open and available while you're working, so you can toggle a button on/off to display it.
Possible solution: https://github.com/nwjs/nw.js/wiki/Devtools-jail-feature