---
type: "fhirpath-function"
title: "FHIRPath Function: unescape"
function: "unescape"
category: "Additional String Functions"
section: "5.7.4"
source: "fhirpath/functions.json"
---
# FHIRPath Function: unescape
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The unescape function takes a singleton string and unescapes it for a given target. The available targets are specified in the escape function description.
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If the input is empty, the result is empty.
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If no target is specified, the result is empty.
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## Summary
- **Category**: Additional String Functions
- **Section**: `5.7.4`
- **Return Type**: `String`
- **Empty Input Result**: `empty`
- **Errors on Multiple Input**: `true`
## Description
The unescape function takes a singleton string and unescapes it for a given target. Available targets are html and json.
## Arguments
- `target`: `String` - Target format (html, json)
## Type Mapping
- `String-String`
## Example
```fhirpath
'\"test\"'.unescape('json') // returns '"test"'
```