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title: charCode
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product: DataWeave
version: 2.13
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---

# charCode

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

## charCode(text: String): Number

Returns the Unicode for the first character in an input string.

For an empty string, the function fails and returns `Unexpected empty string`.

### Parameters

<table><colgroup><col> <col></colgroup><thead><tr><th>Name</th><th>Description</th></tr></thead><tbody><tr><td><p><code>text</code></p></td><td><p>The input string.</p></td></tr></tbody></table>

### Example

This example returns Unicode for the "M" in "Mule".

#### Source

```DataWeave
%dw 2.0
import * from dw::core::Strings
output application/json
---
{
  "charCode" : charCode("Mule")
}
```

#### Output

```XML
{ "charCode" : 77 }
```

## charCode(text: Null): Null

Helper function that enables `charCode` to work with a `null` value.

_Introduced in DataWeave version 2.4.0._