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how does one disable the full screen message in firefox v56.0.1

When entering full screen mode, one is prompted with a message alerting that you have entered full screen mode. How does one disable this message.

When entering full screen mode, one is prompted with a message alerting that you have entered full screen mode. How does one disable this message.

தீர்வு தேர்ந்தெடுக்கப்பட்டது

The purpose of the message is to detect when sites trigger fullscreen since that can be used to phish you with a deceptive UI. But 99.9% of the time, it's just a video, so...

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste full and pause while the list is filtered

(3) Double-click the full-screen-api.warning.delay preference and enter 0 (that's a zero) and click OK

(4) Double-click the full-screen-api.warning.timeout preference and enter as short a time as you like, in milliseconds, and click OK. For example, 250 is a quarter of a second.

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தீர்வு தேர்ந்தெடுக்கப்பட்டது

The purpose of the message is to detect when sites trigger fullscreen since that can be used to phish you with a deceptive UI. But 99.9% of the time, it's just a video, so...

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button promising to be careful or accepting the risk.

(2) In the search box above the list, type or paste full and pause while the list is filtered

(3) Double-click the full-screen-api.warning.delay preference and enter 0 (that's a zero) and click OK

(4) Double-click the full-screen-api.warning.timeout preference and enter as short a time as you like, in milliseconds, and click OK. For example, 250 is a quarter of a second.