true for content scripts running inside private browsing tabs and for extension pages running inside a private browsing process.
let isPrivate = browser.extension.inIncognitoContext; // true or false
A boolean value indicate if the current script is running in a private tab or process.
BCD tables only load in the browser
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.