---
aliases:
- /doc/scratch/
date: 2015-01-22
menu:
  main:
    parent: extras
next: /extras/highlighting
prev: /extras/pagination
title: Scratch
weight: 80
---

`Scratch` -- a "scratchpad" for your node- or page-scoped variables. In most cases you can do well without `Scratch`, but there are some use cases that aren't solvable with Go's templates without `Scratch`'s help, due to scoping issues.


`Scratch` is added to both `Node` and `Page` -- with the three methods `Set`, `Get` and `Add`. `Set` and `Add` takes a `key` and the `value` to add. Get returns the `value` for the `key` given.

`Set` can store values of any type. `Add` accepts values that support Go's `+` operator.

The scope of the backing data is global for the given `Node` or `Page`, and spans partial and shortcode includes.

## Sample usage

The usage is best illustrated with some samples:

```
{{ .Scratch.Add "a1" 12 }}
{{ .Scratch.Get "a1" }} {{/* => 12 */}}
{{ .Scratch.Add "a1" 1 }}
{{ .Scratch.Get "a1" }} // {{/* => 13 */}}

{{ .Scratch.Add "a2" "AB" }}
{{ .Scratch.Get "a2" }} {{/* => AB */}}
{{ .Scratch.Add "a2" "CD" }}
{{ .Scratch.Get "a2" }} {{/* => ABCD */}}

{{ .Scratch.Set "v1" 123 }}
{{ .Scratch.Get "v1" }}  {{/* => 123 */}}       
```