how to organize JS files in Django?
Django template engine has already provided a tag for inherit your HTML structure called 'extend'.
Tag "extends" is a using for extends a parent template.
{% extends "base.html" %} uses the literal value "base.html" as the name of the parent template to extend.
base.html is the parent template that can extendable.
{% load staticfiles %}
<html lang="en">
<head><title>Hello World</title></head>
<body>
<div id="content">
{% block content %}{% endblock %}
</div>
{% block scripts %}
<script src="{% static 'js/main.js' %}"></script>
{% endblock %}
</body>
</html>
and you have another HTML called milk.html that you need everything same as the base.html but include milk.js you just do something like this.
{% load staticfiles %}
{% extends "base.html" %}
{% block scripts %}
<!-- block.super will get the content of the block from the parent template -->
{{ block.super }}
<script src="{% static 'js/milk.js' %}"></script>
{% endblock %}
Read more about docs[1]: [1]: https://docs.djangoproject.com/en/dev/ref/templates/builtins/#std:templatetag-extends
Being lazy, and extending the admin templates with {% extends admin/base.html %} I found that using {% block scripts %} did not work. The JavaScript was not sent to the browser. However base.html has a built-in block {% block extrahead %} which is empty and just the ticket for inserting additional content like scripts into the header.
{% block extrahead %}
<script src="{{ STATIC_URL }}js/milk.js"></script>
{% endblock %}
In your base.html file, add a block inside the head tag like this:
{% block scripts %}
<!-- some default content here -->
{% endblock %}
Now in your different templates files:
{% block scripts %}
<!-- insert per template scripts here -->
{% endblock %}
So in the templates with Milk, it would be like:
{% block scripts %}
<script src="{{ STATIC_URL }}js/milk.js"></script>
{% endblock %}