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Asked: 2026-05-18T09:12:27+00:00

I am using AppEngine with the webapp framework (python). In my script I am

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I am using AppEngine with the webapp framework (python). In my script I am generating javascript code dynamically with Django, for example:

python controller file

template_values = {
    'page': '1',               
}

path = os.path.join(os.path.dirname(__file__), "../views/index.html")
self.response.out.write(template.render(path, template_values))

index.html file

<html>
<head>
...
<script>
{% if page %}
   alert("test");
{% endif %}
</script>
</head>
<body>

...
</body>
</html>

Now, instead of using inline <script> tags I would like to use the <link> tags with a reference to a JS file containing the script. However, I can’t quite understand I can do that using the templates engine. If I include a JS file (dynamically) it would somehow have to know the value of “page”, but “page” is known in the scope of index.html only.

Any ideas?

Thanks,

Joel

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1 Answer

  1. Editorial Team

    If you want dynamically generate your javascript code in your html,
    you can write the code inside python code

    page = 0
template_values = {
    'js_code': 'alert("test:'+str(page)+'")',               
}
path = os.path.join(os.path.dirname(__file__), "../views/index.html")
self.response.out.write(template.render(path, template_values))

    in index.html

    <script>
{{js_code}}
</script>

    If you want to generate a js file dynamically, you can try to pretend there is a js file,
    and generate its content.

    class JSHandler(BaseHandler):
    def get(self):
        page= str(self.request.get("page"))
        js_code ='alert("page:'+page+'");'
        self.response.out.write(js_code)


def main():
 application = webapp.WSGIApplication([
  ('/code.js', JSHandler),
    ], debug=True)
 wsgiref.handlers.CGIHandler().run(application)

    Then you can write this code in your html

    <script type="text/javascript" src="/code.js?page={{page}}">></script>
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