---
title: strings.trimSuffix() function
description: strings.trimSuffix() removes a suffix from a string.
url: https://docs.influxdata.com/flux/v0/stdlib/strings/trimsuffix/
estimated_tokens: 1382
product: Flux
version: v0
---

# strings.trimSuffix() function

-   Flux 0.18.0+
-   View InfluxDB support

`strings.trimSuffix()` removes a suffix from a string.

Strings that do not end with the suffix are returned unchanged.

##### Function type signature

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

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

## Parameters

### v

(Required) String to trim.

### suffix

(Required) Suffix to remove.

## Examples

### Remove a suffix from all values in a column

```js
import "strings"

data
    |> map(fn: (r) => ({r with _value: strings.trimSuffix(v: r._value, suffix: "_ex1")}))
```

[](#view-example-input-and-output)

View example input and output

#### Input data

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | smpl_g9qczs_ex1 | t1 |
| 2021-01-01T00:00:10Z | smpl_0mgv9n_ex1 | t1 |
| 2021-01-01T00:00:20Z | smpl_phw664_ex1 | t1 |
| 2021-01-01T00:00:30Z | smpl_guvzy4_ex1 | t1 |
| 2021-01-01T00:00:40Z | smpl_5v3cce_ex1 | t1 |
| 2021-01-01T00:00:50Z | smpl_s9fmgy_ex1 | t1 |

| _time | _value | *tag |
| --- | --- | --- |
| 2021-01-01T00:00:00Z | smpl_b5eida_ex1 | t2 |
| 2021-01-01T00:00:10Z | smpl_eu4oxp_ex1 | t2 |
| 2021-01-01T00:00:20Z | smpl_5g7tz4_ex1 | t2 |
| 2021-01-01T00:00:30Z | smpl_sox1ut_ex1 | t2 |
| 2021-01-01T00:00:40Z | smpl_wfm757_ex1 | t2 |
| 2021-01-01T00:00:50Z | smpl_dtn2bv_ex1 | 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 |

#### Related

-   [strings.trim() function](/flux/v0/stdlib/strings/trim/)
-   [strings.trimLeft() function](/flux/v0/stdlib/strings/trimleft/)
-   [strings.trimRight() function](/flux/v0/stdlib/strings/trimright/)
-   [strings.trimPrefix() function](/flux/v0/stdlib/strings/trimprefix/)
-   [strings.trimSpace() function](/flux/v0/stdlib/strings/trimspace/)