---
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: join (separator)
layout: subsection
---

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

Creates and returns a string containing all elements in the list, separated by the specified separator string. If the list has only 1 item, then returned string contains that item without the separator.

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

`String`

## <a id="section_dz5_pwg_5db"></a>Instance Method Syntax

```
thisList.join(separator)
```

<table><thead><tr><th>Parameter</th><th>Description</th></tr></thead><tbody><tr><td>separator</td><td>The separator string.</td></tr></tbody></table><br/>

<b>Example</b>

`[1,2,3,4,5].join('|')`

Returns `1|2|3|4|5`

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

```
list:join(list, separator)
```

<table><thead><tr><th>Parameter</th><th>Description</th></tr></thead><tbody><tr><td>list</td><td>The input List.</td></tr><tr><td>separator</td><td>The separator string.</td></tr></tbody></table><br/>