You may need to use Ajax when doing registration procedures to verify whether the user name is available, uploading files online, deleting files, voting procedures and other procedures that do not require refreshing the web page to display results. The principle is that JavaScript reads some current user operation data of the web page through onChange, onClick, onMouseOut and other events, and then transmits this data to a dynamic web page for processing.
The dynamic page called by Ajax should not be loaded into the client's cache. Similarly, the Blog's Trackback program is often unable to receive information. You can try to prevent the Trackback program from writing cached statements before writing the dynamic page.
Alternatively, you can
program code
+math.random();
Submit a random number each time to avoid client caching.