Detect JsObservable

JavaScript libraries

JsObservable is integrated with JsViews and facilitates observable data manipulations that are immediately reflected in the data-bound templates. The library is developed and maintained by Microsoft employee Boris Moore and is used in projects such as Outlook.com and Windows Azure.

01

Websites using JsObservable

2 hostnames in the PluginView corpus for this technology.

HostnameLast seen
mxtoolbox.com8/3/2026
radiko.jp8/5/2026
02

What a detection means

Establishes
One or more public signals on the scanned page matched a known JsObservable signature at the time of the scan.
Does not establish
A sitewide install of JsObservable, an active vendor contract, exclusive use, or that JsObservable is still in place today.
03

How to check a site for JsObservable

  1. 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest JsObservable signals.
  2. 2. PluginView reads only public responses and scores them against proprietary JsObservable fingerprints. Rule bodies and identifiers are not published.
  3. 3. Review the confidence score and text explanation for JsObservable on the results page.
04

FAQ: detecting JsObservable

Can PluginView detect JsObservable without logging in?
Yes. PluginView only reads publicly accessible responses when checking for JsObservable. It does not bypass authentication or paywalls.
What category is JsObservable?
JsObservable is classified under JavaScript libraries in the PluginView directory.
Does PluginView publish JsObservable fingerprint rules?
No. Detection uses proprietary fingerprint rules that are not published. Scan results explain matches in plain language without disclosing rule bodies or identifiers.

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