Leading zeros in Liquid using forloop.index

The expression 

{{ forloop.index | prepend: '00' | slice: -2, 2 }} 

is a clever way to display two-digit numbers with leading zeros in Liquid.

Let’s break it down:

• forloop.index - Gives us the current iteration number (1, 2, 3, etc.)

• prepend: ‘00’ - Adds “00” to the beginning of the number (001, 002, etc.)

• slice: -2, 2 - Takes only the last 2 digits from the right

Example:

• When index is 1: “001” → “01”

• When index is 12: “0012” → “12”

• When index is 3: “003” → “03”