HTTP/2 200
x-guploader-uploadid: AAwnv3I-tKzqACgKjKSKmGoDVS82QHgFhK5nKtIIhTJ1vdcxyfUR4Azy3DDAmoDLjXvSWOGU
x-goog-generation: 1760058360184599
x-goog-metageneration: 1
x-goog-stored-content-encoding: identity
x-goog-stored-content-length: 138349
x-goog-meta-goog-reserved-file-mtime: 1760056687
x-goog-hash: crc32c=Ncr43g==, md5=vdYBnftE+H9wcDHj3nKpxA==
x-goog-storage-class: STANDARD
accept-ranges: none
expires: Sun, 12 Oct 2025 00:58:58 GMT
cache-control: public, max-age=3600
last-modified: Fri, 10 Oct 2025 01:06:00 GMT
etag: W/"bdd6019dfb44f87f707031e3de72a9c4"
content-type: text/html
age: 0
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
alt-svc: clear
referrer-policy: strict-origin-when-cross-origin
x-content-type-options: nosniff
strict-transport-security: max-age=63072000
content-security-policy: default-src 'self'; script-src 'report-sample' 'self' 'wasm-unsafe-eval' https://www.google-analytics.com/analytics.js https://www.googletagmanager.com/gtag/js assets.codepen.io production-assets.codepen.io https://js.stripe.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; script-src-elem 'report-sample' 'self' 'wasm-unsafe-eval' https://www.google-analytics.com/analytics.js https://www.googletagmanager.com/gtag/js assets.codepen.io production-assets.codepen.io https://js.stripe.com 'sha256-XNBp89FG76amD8BqrJzyflxOF9PaWPqPqvJfKZPCv7M=' 'sha256-YCNoU9DNiinACbd8n6UPyB/8vj0kXvhkOni9/06SuYw=' 'sha256-PZjP7OR6mBEtnvXIZfCZ5PuOlxoDF1LDZL8aj8c42rw='; style-src 'report-sample' 'self' 'unsafe-inline'; object-src 'none'; base-uri 'self'; connect-src 'self' developer.allizom.org bcd.developer.allizom.org bcd.developer.mozilla.org updates.developer.allizom.org updates.developer.mozilla.org https://*.google-analytics.com https://*.analytics.google.com https://*.googletagmanager.com https://incoming.telemetry.mozilla.org https://observatory-api.mdn.allizom.net https://observatory-api.mdn.mozilla.net https://api.github.com/search/issues stats.g.doubleclick.net https://api.stripe.com; font-src 'self'; frame-src 'self' interactive-examples.mdn.mozilla.net interactive-examples.mdn.allizom.net mdn.github.io live-samples.mdn.mozilla.net live-samples.mdn.allizom.net *.mdnplay.dev *.mdnyalp.dev *.play.test.mdn.allizom.net https://v2.scrimba.com https://scrimba.com jsfiddle.net www.youtube-nocookie.com codepen.io survey.alchemer.com https://js.stripe.com; img-src 'self' data: *.githubusercontent.com *.googleusercontent.com *.gravatar.com mozillausercontent.com firefoxusercontent.com profile.stage.mozaws.net profile.accounts.firefox.com developer.mozilla.org mdn.dev interactive-examples.mdn.mozilla.net interactive-examples.mdn.allizom.net wikipedia.org upload.wikimedia.org https://mdn.github.io/shared-assets/ https://mdn.dev/ https://*.google-analytics.com https://*.googletagmanager.com www.gstatic.com; manifest-src 'self'; media-src 'self' archive.org videos.cdn.mozilla.net https://mdn.github.io/shared-assets/; child-src 'self'; worker-src 'self';
x-frame-options: DENY
origin-trial: AxVILwizhbMjxFeHOn1P3R8niO1RJY/smaK4B4d1rLzc1gTaxtXMSaTi+FoigYgCw40uFRDwFcEAeqDR+vVLOW4AAABfeyJvcmlnaW4iOiJodHRwczovL2RldmVsb3Blci5tb3ppbGxhLm9yZyIsImZlYXR1cmUiOiJQcml2YXRlQXR0cmlidXRpb25WMiIsImV4cGlyeSI6MTc0MjA3OTYwMH0=
x-cloud-trace-context: 0b07ebdb3dc39ec71f905a9c8d1be95c
date: Sat, 11 Oct 2025 23:58:58 GMT
server: Google Frontend
via: 1.1 google
vary: Accept-Encoding
content-encoding: gzip
x-cache: miss
StorageEvent - Web APIs | MDN
StorageEvent()
Returns a newly constructed StorageEvent
object.
In addition to the properties listed below, this interface inherits the properties of its parent interface, Event
.
key
Read only
Returns a string with the key for the storage item that was changed.
The key
attribute is null
when the change is caused by the storage clear()
method.
newValue
Read only
Returns a string with the new value of the storage item that was changed.
This value is null
when the change has been invoked by storage clear()
method,
or the storage item has been removed from the storage.
oldValue
Read only
Returns a string with the original value of the storage item that was changed.
This value is null
when the storage item has been newly added
and therefore doesn't have any previous value.
storageArea
Read only
Returns a Storage
object that represents the storage object that was affected.
url
Read only
Returns string with the URL of the document whose storage changed.
In addition to the methods listed below, this interface inherits the methods of its parent interface, Event
.
initStorageEvent()
Deprecated
Initializes the event in a manner analogous to the similarly-named initEvent()
method in the DOM Events interfaces. Use the constructor instead.