How to Prevent Browser Caching for AJAX Responses?

How to Disable Browser Caching for AJAX Responses

When loading dynamic content with AJAX, such as using jQuery's $.get() method, the results may be cached by the browser. This can lead to stale data being displayed when subsequent requests are made.

Hack: Adding Random QueryString

A common workaround is to append a random string to the query string, effectively making each request unique and thus preventing caching. However, this approach is not ideal due to its hacky nature.

Better Solution: $.ajaxSetup

A more elegant way to disable browser caching for AJAX requests is to use the $.ajaxSetup() function. By setting the cache option to false, all future AJAX calls, regardless of the method used (e.g., $.get, $.ajax), will have caching disabled.

$.ajaxSetup({ cache: false });

Once this configuration is set, all AJAX requests made within the scope of the current document will automatically have their cache disabled.

Additional Tips

If a unique string is still required to prevent caching for specific situations, consider using a unique number sequence or a hashed value based on the request parameters. This provides a more deterministic and readable approach compared to using new Date().toString().

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