forloop

Information about a parent for loop.

Properties	Type	Description
`first`	boolean	Returns `true` if the current iteration is the first. Returns `false` if not.
`last`	boolean	Returns `true` if the current iteration is the last. Returns `false` if not.
`index`	number	The 1-based index of the current iteration.
`index0`	number	The 0-based index of the current iteration.
`length`	number	The total number of iterations in the loop.
`rindex`	number	The 1-based index of the current iteration, in reverse order.
`rindex0`	number	The 0-based index of the current iteration, in reverse order.

{
  "first":true,
  "last":false,
  "index":1,
  "index0":0,
  "rindex":4,
  "rindex0":3,
  "length":4
}

use the forloop object

{% for i in (1..5) %}
  {% if forloop.length > 0 %}
    {{ i }}{% unless forloop.last %},{% endunless %}
  {% endif %}
{% endfor %}

1, 2, 3, 4, 5