The problem that IE8 cannot be refreshed every time with Ajax access

Recently, I found that I used ajax to access the background and IE8 to access the background. For the first time, I can return a normal return value. I will not execute the background and will always return the first access result.

It's okay to use ie9, ie10, and other browsers.

After the test, it is found that IE8 caches the result obtained for the first time, so the second time is not submitted to the background.

Add a random number to the end of the Ajax request, so that each request is inconsistent, and IE will not get the result from the cache.

For example, add ".... & amp; random = "+ math. random (); so that each request is inconsistent, ie will not get the result from the cache.