---
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: replaceOnce (searchString, replacement)
layout: subsection
---

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

Replaces the searchString (case-sensitive) with the replacement string only once.

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

`String`

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

```
thisString.replaceOnce(searchString, replacement)
```

<table><thead><tr><th>Parameter</th><th>Description</th></tr></thead><tbody><tr><td>searchString</td><td>The string to search (case-sensitive).</td></tr><tr><td>replacement</td><td>The string to replace.</td></tr></tbody></table><br/>

<b>Example</b>

`'The quick quick brown fox'.replaceOnce('Quick', 'Small')`

Returns `'The quick quick brown fox'`

`'The quick quick brown fox'.replaceOnce('quick', 'Small')`

Returns `'The Small quick brown fox'`

## <a id="section_dz5_pwg_5d"></a>Namespace Function Syntax

```
string:replaceOnce(string, searchString, replacement)
```

<table><thead><tr><th>Parameter</th><th>Description</th></tr></thead><tbody><tr><td>string</td><td>The input String.</td></tr><tr><td>searchString</td><td>The string to search (case-sensitive).</td></tr><tr><td>replacement</td><td>The string to replace.</td></tr></tbody></table><br/>