NotRestoredReasons: children property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

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The children read-only property of the NotRestoredReasons interface returns an array of NotRestoredReasons objects, one for each child <iframe> embedded in the current document, which may contain reasons why the top-level frame was blocked relating to the child frames.

Each object has the same structure as the parent object — this way, any number of levels of embedded <iframe>s can be represented inside the object recursively.

Value

An array of NotRestoredReasons objects.

If the frame has no children, the array will be empty; if the document is in a cross-origin <iframe>, children will return null.

Examples

See Monitoring bfcache blocking reasons for examples.

Specifications

Browser compatibility

See also

• Monitoring bfcache blocking reasons
• PerformanceNavigationTiming.notRestoredReasons