---
title: strings.joinStr() function
description: strings.joinStr() concatenates elements of a string array into a single string using a specified separator.
url: https://docs.influxdata.com/flux/v0/stdlib/strings/joinstr/
estimated_tokens: 157
product: Flux
version: v0
publisher: InfluxData
canonical: https://docs.influxdata.com/flux/v0/stdlib/strings/joinstr/
date: '2024-04-08T16:01:02-06:00'
lastmod: '2024-04-08T16:01:02-06:00'
---

* Flux 0.18.0+

InfluxDB support

`strings.joinStr()` concatenates elements of a string array into a single string using a specified separator.

##### Function type signature

```js
(arr: [string], v: string) => string
```

For more information, see [Function type signatures](/flux/v0/function-type-signatures/).

## Parameters

### arr

(Required)
Array of strings to concatenate.

### v

(Required)
Separator to use in the concatenated value.

## Examples

### Join a list of strings into a single string

```
import "strings"

strings.joinStr(arr: ["foo", "bar", "baz", "quz"], v: ", ")// Returns "foo, bar, baz, quz"

```