Ajax prevents page caching from code _ajax related

Source: Internet
Author: User
When using AJAX technology, we usually do not have to refresh the page to submit data with the same URL to get data when it will be found to be the previous data ~ so that the client side to bring illusion ~ ~ The following methods can be used to cancel the cache
HTM Web page
<metahttp-equiv= "Pragma" content= "No-cache" >
<metahttp-equiv= "Cache-control" content= "No-cache,must-revalidate" >
<metahttp-equiv= "Expires" content= "WED,26FEB199708:21:57GMT" >
or <metahttp-equiv= "expires" content= "0" >
ASP Web page
Response.expires=-1
Response.expiresabsolute=now ()-1
Response.cachecontrol= "No-cache"
PHP Web page
Header ("Expires:mon,26jul199705:00:00gmt");
Header ("Cache-control:no-cache,must-revalidate");
Header ("Pragma:no-cache");
JSP Web page
Response.AddHeader ("Pragma", "no-cache");
Response.AddHeader ("Cache-control", "no-cache,must-revalidate");
Response.AddHeader ("Expires", "0");

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