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This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The policy read-only property of the Document interface returns the Policy interface which provides a simple API for introspecting the feature policies applied to a specific document.

Syntax

var policy = HTMLIFrameElement.policy

Value

The Policy interface.

Specifications

Specification Status Comment
Unknown Unknown Initial definition.

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
Basic support
Experimental
Chrome Full support 69
Disabled
Full support 69
Disabled
Disabled From version 69: this feature is behind the #enable-experimental-productivity-features preference (needs to be set to Enabled). To change preferences in Chrome, visit chrome://flags.
Edge No support NoFirefox Full support 65
Disabled
Full support 65
Disabled
Disabled From version 65: this feature is behind the dom.security.featurePolicy.webidl.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE No support NoOpera Full support 56
Disabled
Full support 56
Disabled
Disabled From version 56: this feature is behind the #enable-experimental-productivity-features preference (needs to be set to Enabled).
Safari No support NoWebView Android Full support 69
Disabled
Full support 69
Disabled
Disabled From version 69: this feature is behind the #enable-experimental-productivity-features preference (needs to be set to Enabled).
Chrome Android Full support 69
Disabled
Full support 69
Disabled
Disabled From version 69: this feature is behind the #enable-experimental-productivity-features preference (needs to be set to Enabled). To change preferences in Chrome, visit chrome://flags.
Edge Mobile No support NoFirefox Android Full support 65
Disabled
Full support 65
Disabled
Disabled From version 65: this feature is behind the dom.security.featurePolicy.webidl.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Opera Android Full support 56
Disabled
Full support 56
Disabled
Disabled From version 56: this feature is behind the #enable-experimental-productivity-features preference (needs to be set to Enabled).
Safari iOS No support NoSamsung Internet Android ?

Legend

Full support  
Full support
No support  
No support
Compatibility unknown  
Compatibility unknown
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
User must explicitly enable this feature.
User must explicitly enable this feature.

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此页面的贡献者: mfuji09, jpmedley
最后编辑者: mfuji09,