---
title: "Control Flow"
slug: "control-flow"
updated: 2024-03-13T17:28:17Z
published: 2024-03-13T17:28:17Z
canonical: "help.nexudus.com/control-flow"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.nexudus.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Control Flow

## if

Executes a block of code only if a certain condition is `true`.

Input

{% if product.title == "Awesome Shoes" %}

These shoes are awesome!

{% endif %}

Output

These shoes are awesome!

## unless

The opposite of `if` – executes a block of code only if a certain condition is **not** met.

Input

{% unless product.title == "Awesome Shoes" %}

These shoes are not awesome.

{% endunless %}

Output

These shoes are not awesome.

This would be the equivalent of doing the following:

{% if product.title != "Awesome Shoes" %}

These shoes are not awesome.

{% endif %}

## elsif / else

Adds more conditions within an `if` or `unless` block.

Input

<!-- If customer.name = "anonymous" -->

{% if customer.name == "kevin" %}

Hey Kevin!

{% elsif customer.name == "anonymous" %}

Hey Anonymous!

{% else %}

Hi Stranger!

{% endif %}

Output

Hey Anonymous!

## case/when

Creates a switch statement to compare a variable with different values. `case` initialises the switch statement, and `when` compares its values.

Input

{% assign handle = "cake" %}

{% case handle %}

{% when "cake" %}

This is a cake

{% when "cookie" %}

This is a cookie

{% else %}

This is not a cake nor a cookie

{% endcase %}

Output

This is a cake