js-properties gives false positive on init

[tomByrer]

When I first visit in Firefox, it gives incorrect green results for foo-bar:

---

But when I edit it to foo-ba, it gives the correct results:

Other than that small bug, it is very helpful, cheers!

[janbrasna]

Yup, present in current chromium too — the sample default after loading the tool is not the same state (green+yellow) as after editing the placeholder back and forth to the same identifier name (orange+red).