docs-v2/content/flux/v0.x/stdlib/strings/replaceall.md

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---
title: strings.replaceAll() function
description: >
`strings.replaceAll()` replaces all non-overlapping instances of a substring with a specified replacement.
menu:
flux_0_x_ref:
name: strings.replaceAll
parent: strings
identifier: strings/replaceAll
weight: 101
---
<!------------------------------------------------------------------------------
IMPORTANT: This page was generated from comments in the Flux source code. Any
edits made directly to this page will be overwritten the next time the
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To make updates to this documentation, update the function comments above the
function definition in the Flux source code:
https://github.com/influxdata/flux/blob/master/stdlib/strings/strings.flux#L672-L672
Contributing to Flux: https://github.com/influxdata/flux#contributing
Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md
------------------------------------------------------------------------------->
`strings.replaceAll()` replaces all non-overlapping instances of a substring with a specified replacement.
##### Function type signature
```js
(t: string, u: string, v: string) => string
```
{{% caption %}}For more information, see [Function type signatures](/flux/v0.x/function-type-signatures/).{{% /caption %}}
## Parameters
### v
({{< req >}})
String value to search.
### t
({{< req >}})
Substring to replace.
### u
({{< req >}})
Replacement for all instances of `t`.
## Examples
### Replace string matches
```js
import "sampledata"
import "strings"
sampledata.string()
|> map(fn: (r) => ({r with _value: strings.replaceAll(v: r._value, t: "p", u: "XX")}))
```
{{< expand-wrapper >}}
{{% expand "View example input and output" %}}
#### Input data
| _time | *tag | _value |
| -------------------- | ---- | ----------- |
| 2021-01-01T00:00:00Z | t1 | smpl_g9qczs |
| 2021-01-01T00:00:10Z | t1 | smpl_0mgv9n |
| 2021-01-01T00:00:20Z | t1 | smpl_phw664 |
| 2021-01-01T00:00:30Z | t1 | smpl_guvzy4 |
| 2021-01-01T00:00:40Z | t1 | smpl_5v3cce |
| 2021-01-01T00:00:50Z | t1 | smpl_s9fmgy |
| _time | *tag | _value |
| -------------------- | ---- | ----------- |
| 2021-01-01T00:00:00Z | t2 | smpl_b5eida |
| 2021-01-01T00:00:10Z | t2 | smpl_eu4oxp |
| 2021-01-01T00:00:20Z | t2 | smpl_5g7tz4 |
| 2021-01-01T00:00:30Z | t2 | smpl_sox1ut |
| 2021-01-01T00:00:40Z | t2 | smpl_wfm757 |
| 2021-01-01T00:00:50Z | t2 | smpl_dtn2bv |
#### Output data
| _time | _value | *tag |
| -------------------- | ------------- | ---- |
| 2021-01-01T00:00:00Z | smXXl_g9qczs | t1 |
| 2021-01-01T00:00:10Z | smXXl_0mgv9n | t1 |
| 2021-01-01T00:00:20Z | smXXl_XXhw664 | t1 |
| 2021-01-01T00:00:30Z | smXXl_guvzy4 | t1 |
| 2021-01-01T00:00:40Z | smXXl_5v3cce | t1 |
| 2021-01-01T00:00:50Z | smXXl_s9fmgy | t1 |
| _time | _value | *tag |
| -------------------- | ------------- | ---- |
| 2021-01-01T00:00:00Z | smXXl_b5eida | t2 |
| 2021-01-01T00:00:10Z | smXXl_eu4oxXX | t2 |
| 2021-01-01T00:00:20Z | smXXl_5g7tz4 | t2 |
| 2021-01-01T00:00:30Z | smXXl_sox1ut | t2 |
| 2021-01-01T00:00:40Z | smXXl_wfm757 | t2 |
| 2021-01-01T00:00:50Z | smXXl_dtn2bv | t2 |
{{% /expand %}}
{{< /expand-wrapper >}}