> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xano.com/llms.txt
> Use this file to discover all available pages before exploring further.
# XanoScript Filter Reference
> Reference of all the filters available in XanoScript
## Using Filters in XanoScript
Filters in XanoScript are applied right after the target value using a `|` pipe character.
As an example, we have a text string stored in a variable called `x1`. We want to apply a `capitalize` filter to it.
This is what defining the variable would look like in XanoScript.
```javascript theme={null}
var x1 {
value = "hello"
}
```
When we add the filter, it looks like this.
```javascript theme={null}
var x1 {
value = "hello"|capitalize
}
```
If a filter has parameters required to use it, we can use `:` characters to add and separate them.
As an example, we'll take our text string and use the `concat` filter to append additional text to it with a separator. `"hello"` will become `"hello, world"`. The `concat` filter asks for two parameters: a value and a separator. We'll use : to separate each parameter.
```javascript theme={null}
var x1 {
value = "hello"|concat:"world":", "
}
```
You can add multiple filters by separating each one with pipe characters.
```javascript theme={null}
value = "hello"|concat:"world":", "|capitalize
```
You can also nest filters. In this example, we're using the `capitalize` filter specifically on `"world"` inside of the `concat` filter.
```javascript theme={null}
value = "hello"|concat:"world"|capitalize:", "
```
## Filter Reference