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

BCD tables only load in the browser

See also