Handling Cross-Browser Compatibility in Django Templates with Dynamic JavaScript Loading
Quick question that's been bugging me - Building an application that leverages Django templates, I've hit a snag with ensuring proper JavaScript loading across different browsers... My goal is to create dynamic content that can adjust based on the user’s browser without compromising performance. The main issue arises when I try to conditionally load certain scripts that are essential for older browsers. For instance, I want to load a polyfill specifically for Internet Explorer 11 that enhances compatibility with modern JavaScript features. Here’s a snippet of my template code: ```html {% load static %} <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>My Application</title> <script src="{% static 'js/main.js' %}"></script> {% if user_agent.browser == 'IE' and user_agent.version | int == 11 %} <script src="{% static 'js/polyfill.js' %}"></script> {% endif %} </head> <body> <h1>Welcome to My App</h1> </body> </html> ``` However, I'm working with the `django-user-agents` package to detect the browser, and it seems like the condition isn't executing properly. I've tested the user agent detection separately and confirmed it works as expected. Still, the polyfill is not loading in IE11, while everything looks fine in modern browsers. Additionally, I've verified the JavaScript file paths and ensured that there are no errors in the console. As a fallback, I attempted to include the polyfill in the main script file, but that led to performance issues due to loading unnecessary code in browsers that do not require it. I’ve read several discussions suggesting the use of JavaScript feature detection as a more robust solution. Thinking about rewriting part of my JavaScript to check for specific features at runtime, but that feels redundant given my current setup. Has anyone faced this situation before? What’s the best way to manage script loading for cross-browser compatibility in Django templates without sacrificing performance? For context: I'm using Python on Windows. What am I doing wrong? I'm using Python 3.9 in this project. Any suggestions would be helpful. Thanks for any help you can provide! This is happening in both development and production on Windows 10. I'd really appreciate any guidance on this.