Loading external script with jinja2 template directive

Question

I\'m very new to jinja2 and the use of templates in general so I was wondering if there\'s an easy way to load an external javascript. I was thinking of using:

Answer 1

You have two choices here -- the first is the way you did it -- simply add the appropriate markup into a template (or a block if you want to be able to override it in templates which extend your first template.)

The second way is to use Jinja2's include function:

{% block javascript %}
    
    
{% endblock %}

The advantage of using include is that Jinja2 will process your javascript before including it -- which means you can have variables in your javascript that change depending on the state of your program.

The disadvantage of using include in this manner is the same -- your .js file will be run through Jinja2 before being sent out -- if you are not using dynamic content you will just be processing the file unnecessarily for every request -- and if you are using a javascript templating library with Jinja2 syntax then trouble is likely.