Overview / Web Technology
Web technology reference for developers
HTML
Structure of content on the web
CSS
Code used to describe document style
JavaScript
General-purpose scripting language
HTTP
Protocol for transmitting web resources
Web APIs
Interfaces for building web applications
Web Extensions
Developing extensions for web browsers
Accessibility
Build web projects usable for all
Web Technology
Web technology reference for developers
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In this articleNotRestoredReasons
ExperimentaltoJSON()
ExperimentalEventCounts
LargestContentfulPaint
LayoutShift
ExperimentalLayoutShiftAttribution
ExperimentalNotRestoredReasonDetails
ExperimentalPerformance
PerformanceElementTiming
ExperimentalPerformanceEntry
PerformanceEventTiming
PerformanceLongAnimationFrameTiming
ExperimentalPerformanceLongTaskTiming
ExperimentalPerformanceMark
PerformanceMeasure
PerformanceNavigation
DeprecatedPerformanceNavigationTiming
PerformanceObserver
PerformanceObserverEntryList
PerformancePaintTiming
PerformanceResourceTiming
PerformanceScriptTiming
ExperimentalPerformanceServerTiming
PerformanceTiming
DeprecatedTaskAttributionTiming
ExperimentalVisibilityStateEntry
ExperimentalWindow.performance
WorkerGlobalScope.performance
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The url
read-only property of the NotRestoredReasons
interface returns a string representing the URL of the navigated page or <iframe>
.
A string.
If the document is in a cross-origin <iframe>
, url
will return null
.
See Monitoring bfcache blocking reasons for examples.
Specifications Specification HTML.
This page was last modified on Apr 12, 2024 by MDN contributors.
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