---
name: "up.util.isList"
area: "API"
kind: "JavaScript function"
parent: "up.util module"
url: "https://unpoly.com/api/up.util.isList"
---
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# up.util.isList(value)

Returns whether the given argument is an [array-like value](https://unpoly.com/api/List.md).

To test whether a value is an actual [`Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array), use [`up.util.isArray()`](https://unpoly.com/api/up.util.isArray.md).

---

## Parameters {#parameters}

### value {#value}

(required)

Type: any

---

## Return value {#return-value}

Type: boolean