---
title: regexp.getString() function
description: >
  `regexp.getString()` returns the source string used to compile a regular expression.
menu:
  flux_0_x_ref:
    name: regexp.getString
    parent: regexp
    identifier: regexp/getString
weight: 101
---

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`regexp.getString()` returns the source string used to compile a regular expression.



##### Function type signature

```js
(r: regexp) => string
```

{{% caption %}}For more information, see [Function type signatures](/flux/v0.x/function-type-signatures/).{{% /caption %}}

## Parameters

### r
({{< req >}})
Regular expression object to convert to a string.