How To Make Html Call A Javascript Function From An External Js File, In Django Environment

I am developing an app with Django. I want an alert window pops up as soon as the user lands on a certain HTML page. The javascript function that makes the window pop up is called

Solution 1:

In the external javascript file at path

static/js/prova.js

insert

function funprova() {
    alert("Hello! I am an alert box from remote js file!!");
    }

In the HTML page that has to pop up the window, before of the closing </body> tag, insert

{% load static %}

<script type="text/javascript" src={% static "js/prova.js" %}></script>
<script> funprova() </script> 

Note: You have to call javascript in two differents script tags, because in the former you make the call to a function stored an external file, while in the latter you call a function that was already imported into the HTML file environment.

Note: It is better to insert the {% load static %} Django tag at the very top of your HTML page, before the HTML tag.