StorageEvent: oldValue property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The oldValue property of the StorageEvent interface returns the original value of the storage item whose value changed.

Value

A string containing the original value of the storage item.

Specifications

Specification
HTML Standard
# dom-storageevent-oldvalue-dev

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
oldValue

Legend

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Full support
Full support
No support
No support

See also