web api instance property
NotRestoredReasons: id property
Limited availability
The id read-only property of the
NotRestoredReasons interface returns a string representing the id attribute value of the <iframe> the document is contained in (for example <iframe id="foo" src="/firefox/mdn-asset-missing.svg">).
Value
A string.
If the document is not in an <iframe> or the <iframe> has no id set, id will return null.
Examples
See Monitoring bfcache blocking reasons for examples.
Specifications
SpecificationsStandards references are available on the canonical MDN page.
Browser compatibility
Browser compatibilityCompatibility data is available on the canonical MDN page.