Truthy and falsy

In programming, anything that returns true in a conditional is called truthy. Anything that returns false in a conditional is called falsy. All object types can be described as either truthy or falsy.

• Truthy
• Falsy
• Summary

Truthy

All values in Liquid are truthy except nil and false.

In the example below, the string “Tobi” is not a boolean, but it is truthy in a conditional:

{% assign tobi = "Tobi" %}

{% if tobi %}
  This condition will always be true.
{% endif %}

Strings, even when empty, are truthy. The example below will result in empty HTML tags if settings.fp_heading is empty:

Input

{% if settings.fp_heading %}
  <h1>{{ settings.fp_heading }}</h1>
{% endif %}

Output

<h1></h1>

Falsy

The falsy values in Liquid are nil and false.

Summary

The table below summarizes what is truthy or falsy in Liquid.