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# endsWith

> Use the endsWith task to determine whether a string ends with a specified sequence of characters.

The `endsWith` task searches a given string to determine whether a specified sequence of characters appears at the end. You can also limit the number of characters searched. The task returns `true` if the string ends with the characters, or `false` if they are not found. The original string is not changed.

To check whether a string begins with a specified sequence instead, use the `startsWith` task.

## Potential use case

Use `endsWith` to check whether a filename ends with a certain extension. For example, to check whether `filename.txt` ends with `.txt`, run `endsWith` against your file list. A `true` result confirms the extension is present; a `false` result confirms it is not. You can also use the `length` parameter to limit the search to only the beginning portion of the list.

## Properties

| Incoming       | Type   | Description                                                                  |
| :------------- | :----- | :--------------------------------------------------------------------------- |
| `str`          | String | Required. The string to search.                                              |
| `searchString` | String | Required. The characters to search for at the end of the string.             |
| `length`       | Number | The length of the string to search. If omitted, the full string is searched. |

| Outgoing | Type    | Description                                                      |
| :------- | :------ | :--------------------------------------------------------------- |
| `result` | Boolean | `true` if `searchString` is found at the end; `false` otherwise. |

## Example 1

In this example:

* `str` is `"Hello world, welcome to the universe."`
* `searchString` is `"universe."`
* `length` is not specified, so the entire string is searched.
* The expected `result` is `true`.

![](/_fern-img/b275190536c3cab3eb408aca4bdcdf0b490c7e33e445941f91ea798d0752817a.webp)

## Example 2

In this example:

* `str` is the same as example one.
* `searchString` is `"world"`.
* `length` is specified — only the first 11 characters of the string are searched.
* The expected `result` is `true`, because `"world"` is found at the end of the first 11 characters.

![](/_fern-img/f36a0c47423c774ccab662312cceba8f18557726889d8afc48f9e05cf2a405b4.webp)

> Use the endsWith task to determine whether a string ends with a specified sequence of characters.