Liquid Operators

Equal to, and not equal to. (Older cheat sheets print this as !-, which is a typo.)

{% if product.type == 'Shirt' %}
{% if product.vendor != 'Acme' %}

Greater than, less than, greater than or equal to, less than or equal to.

{% if product.price >= 5000 %}Free shipping{% endif %}

Combine conditions. Liquid has no parentheses, and conditions are evaluated from right to left — nest if tags when order matters.

{% if product.available and product.price < 2000 %}
  Deal of the day
{% endif %}

Checks for a substring in a string, or a string in an array of strings. It does not work on arrays of objects.

{% if product.tags contains 'sale' %}On sale{% endif %}