increment

Creates and outputs a new number variable with initial value 0. On subsequent calls, it increases its value by one and outputs the new value.

Input

{% increment my_counter %}
{% increment my_counter %}
{% increment my_counter %}

Output

0 1 2

Variables created using increment are independent from variables created using assign or capture.

In the example below, a variable named “var” is created using assign. The increment tag is then used several times on a variable with the same name. Note that the increment tag does not affect the value of “var” that was created using assign.

Input

{% assign var = 10 %}
{% increment var %}
{% increment var %}
{% increment var %}
{{ var }}

Output

0
1
2
10

decrement

Creates and outputs a new number variable with initial value -1. On subsequent calls, it decreases its value by one and outputs the new value.

Input

{% decrement variable %}
{% decrement variable %}
{% decrement variable %}

Output

-1
-2
-3

Like increment, variables declared using decrement are independent from variables created using assign or capture.