Loop through an arbitrary number of items using the Nunjucks range function. This is very useful when prototyping to generate dummy markup or content. This example outputs 10 <div> elements:

{% for i in range(0, 10) %}
  <div></div>
{% endfor %}

You can also include the index in the output, like so:

{% for i in range(0, 10) %}
  <div>{{ i }}</div>
{% endfor %}

I used this concept all the time when prototypying with Pug, but since I’ve been working with Eleventy more I’ve decided to switch to using Nunjucks where feasible, so I’m re-learning some old techniques. For completeness, here’s the Pug method:

for i in Array(9)
  div #{i}