---
name: "up.Response.prototype.expired"
area: "API"
kind: "Property"
parent: "up.Response class"
url: "https://unpoly.com/api/up.Response.prototype.expired"
---
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# up.Response.prototype.expired

Returns whether this [cached](https://unpoly.com/learn/caching.md) response has expired.

Content rendered from an expired response is [revalidated](https://unpoly.com/learn/caching.md#revalidation) with the server.

---

## Value {#value}

### expired {#expired}

Type: boolean