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StorageEvent oldValue Property

❮ DOM Events ❮ StorageEvent

Example

Get the old value of the storage item that changed:

window.addEventListener("storage", myFunction);

function myFunction(event) {
  var x = "Old Value: " + event.oldValue;
  document.getElementById("demo").innerHTML = x;
}
Try it Yourself »

Description

The oldValue property returns the old value of the changed storage item.

Note: The storage event is only triggered when a window other than itself makes the changes.


Browser Support

Property
oldValue Yes Yes Yes Yes Yes

Syntax

event.oldValue

Technical Details

Return Value: A String, representing the old value of the storage item

Related Pages

StorageEvent reference: The key Property

StorageEvent reference: The newValue Property

StorageEvent reference: The storageArea Property

StorageEvent reference: The url Property


❮ DOM Events ❮ StorageEvent

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