What strategies can I employ to prevent the Unexpected token error from occurring while working with django and javascript?

Attempting to transfer data from my Django application to JavaScript based on the solutions provided in this question

views.py

context['username'] = json.dumps(request.user.username)

test_script.js

document.write('Script working')
username = {{ username|safe }};

Encountering an error in the console:

Uncaught SyntaxError: Unexpected token '{'

What might be causing this issue?

Answer №1

Imagine you have the following HTML:

<html>
  <body>
    .
    .
    .
  </body>
  <script>
    var username = "{{ username|safe }}"
  </script>
  <script src="path/to/your/script.js"></script>
</html>

By placing your username variable in the HTML, you can then easily access it in your script file.

Answer №2

If you're using Django, you're in luck because there's already a solution for this specific issue. When working with templates and extending the base template, you can easily handle JSON data.

....
{{ username|json_script:'username'}}

To access this JSON data in your JavaScript file, simply use the following code:

var username = JSON.parse(document.getElementById('username').textContent)

If you need more help or information on how to work with JSON script in Django, check out https://docs.djangoproject.com/en/3.0/ref/templates/builtins/#json-script

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