Ajax cache solution tutorial

Recently I made a project and used a lot of ajax. There was no cache problem in firefox, but there was a serious ajax cache in IE testing. The data was always lagging behind and I checked some information, I sorted out the Ajax cache solution.

1. Add the header on the server ("Cache-Control: no-cache, must-revalidate ");

2. Add anyAjaxObj. setRequestHeader ("If-Modified-Since", "0") before ajax sends a request ″);

3. Add anyAjaxObj. setRequestHeader ("Cache-Control", "no-cache") before ajax sends a request ");

4. Add "? Fresh = "+ Math. random (); // Of course, the fresh parameter can be any one here

5. The fifth method is similar to the fourth method. Add "? Timestamp = "+ new Date (). getTime (); // This method is currently used. It is considered to be easy to maintain and the effect is good.

6. Replace GET with POST: Not recommended