Appearance of form changed after update
You have performed a Visforms update and now the form looks changed or strange or even has real display errors. What the user can experience despite a successful update is usually the result of various caching mechanisms.
Various caching mechanisms mean that the updated Visforms files are not used in the web browser. Instead, the cache uses an outdated cached version (stale content) of the file.
Note: You can clear the web browser cache and re-download all files using the keyboard shortcut Ctrl + Shift + R.
Caching mechanisms
Caching basically reduces the time it takes to display a page completely. The various places of caching shorten the path of a file from the backend with the original to the web browser, which uses the file to display the page. Caching is used intensively to conserve resources and load websites completely more quickly.
The places of caching include:
- The Joomla instance
- Joomla instance caching plugins
- An Internet gateway with appropriate extensions and configuration
- The Internet provider
- The web browser
CSS files and JavaScript files in particular are affected
Caching also affects CSS files and JavaScript files, which determine the look and behavior in relation to the HTML code. In the case of cached CSS files, the new modified HTML does not match the old CSS files from the cache.
The web browser
After an update to the server, a web browser does not necessarily know about all the changed files.
You can clear the web browser’s cache and re-download all files using the keyboard shortcut Ctrl + Shift + R.