---
category: [Administration & Integrations, Platform and Product Extensions, Platform and Product Extensions/Integration, Administration & Integrations/Custom Integrations & Apps, Platform and Product Extensions/Workday Extend]
keyword: [Extend, PMD Scripting, Scripts]
nav: wcp_docs
parent_url: /wcp_docs/
title: indexOf (object, list)
layout: subsection
---

## <a id="section_m3p_myb_5db"></a>Description

Returns the zero-based index position of a given object in the list. Returns -1 if the object isn't in the list or there’s an input error.

## <a id="section_cyq_j1m_zsb"></a>Return Type

`int`

## <a id="section_dz5_pwg_5db"></a>Namespace Function Syntax

```
list:indexOf(object, list)
```

<table><thead><tr><th>Parameter</th><th>Description</th></tr></thead><tbody><tr><td>object</td><td>An Object to find</td></tr><tr><td>list</td><td>A list of Objects</td></tr></tbody></table><br/>

<b>Example</b>

`list:indexOf('b', ['a', 'b'])`

Returns `1`