---
title: strings.trim() function
description: >
  `strings.trim()` removes leading and trailing characters specified in the cutset from a string.
menu:
  flux_v0_ref:
    name: strings.trim
    parent: strings
    identifier: strings/trim
weight: 101
---

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`strings.trim()` removes leading and trailing characters specified in the cutset from a string.



##### Function type signature

```js
(cutset: string, v: string) => string
```

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

## Parameters

### v
({{< req >}})
String to remove characters from.



### cutset
({{< req >}})
Leading and trailing characters to remove from the string.

Only characters that match the cutset string exactly are trimmed.


## Examples

### Trim leading and trailing periods from all values in a column

```js
import "strings"

data
    |> map(fn: (r) => ({r with _value: strings.trim(v: r._value, cutset: "smpl_")}))

```

{{< expand-wrapper >}}
{{% expand "View example input and output" %}}

#### Input data

| _time                | _value        | *tag |
| -------------------- | ------------- | ---- |
| 2021-01-01T00:00:00Z | .smpl_g9qczs. | t1   |
| 2021-01-01T00:00:10Z | .smpl_0mgv9n. | t1   |
| 2021-01-01T00:00:20Z | .smpl_phw664. | t1   |
| 2021-01-01T00:00:30Z | .smpl_guvzy4. | t1   |
| 2021-01-01T00:00:40Z | .smpl_5v3cce. | t1   |
| 2021-01-01T00:00:50Z | .smpl_s9fmgy. | t1   |

| _time                | _value        | *tag |
| -------------------- | ------------- | ---- |
| 2021-01-01T00:00:00Z | .smpl_b5eida. | t2   |
| 2021-01-01T00:00:10Z | .smpl_eu4oxp. | t2   |
| 2021-01-01T00:00:20Z | .smpl_5g7tz4. | t2   |
| 2021-01-01T00:00:30Z | .smpl_sox1ut. | t2   |
| 2021-01-01T00:00:40Z | .smpl_wfm757. | t2   |
| 2021-01-01T00:00:50Z | .smpl_dtn2bv. | t2   |


#### Output data

| _time                | _value        | *tag |
| -------------------- | ------------- | ---- |
| 2021-01-01T00:00:00Z | .smpl_g9qczs. | t1   |
| 2021-01-01T00:00:10Z | .smpl_0mgv9n. | t1   |
| 2021-01-01T00:00:20Z | .smpl_phw664. | t1   |
| 2021-01-01T00:00:30Z | .smpl_guvzy4. | t1   |
| 2021-01-01T00:00:40Z | .smpl_5v3cce. | t1   |
| 2021-01-01T00:00:50Z | .smpl_s9fmgy. | t1   |

| _time                | _value        | *tag |
| -------------------- | ------------- | ---- |
| 2021-01-01T00:00:00Z | .smpl_b5eida. | t2   |
| 2021-01-01T00:00:10Z | .smpl_eu4oxp. | t2   |
| 2021-01-01T00:00:20Z | .smpl_5g7tz4. | t2   |
| 2021-01-01T00:00:30Z | .smpl_sox1ut. | t2   |
| 2021-01-01T00:00:40Z | .smpl_wfm757. | t2   |
| 2021-01-01T00:00:50Z | .smpl_dtn2bv. | t2   |

{{% /expand %}}
{{< /expand-wrapper >}}