采用AJAX技術的時候 通常我們無刷新頁面提交數(shù)據(jù)后 用同樣的url去獲取數(shù)據(jù)的時候會發(fā)現(xiàn)是以前的數(shù)據(jù)~那樣就給client端帶來假象了~~ 采用以下的方法可以取消緩存 
htm網(wǎng)頁 
<metahttp-equiv="pragma"content="no-cache"> 
<metahttp-equiv="cache-control"content="no-cache,must-revalidate"> 
<metahttp-equiv="expires"content="wed,26feb199708:21:57gmt"> 
或者<metahttp-equiv="expires"content="0"> 
asp網(wǎng)頁 
response.expires=-1 
response.expiresabsolute=now()-1 
response.cachecontrol="no-cache" 
php網(wǎng)頁 
header("expires:mon,26jul199705:00:00gmt"); 
header("cache-control:no-cache,must-revalidate"); 
header("pragma:no-cache");  
jsp網(wǎng)頁
response.addHeader("pragma", "no-cache");
response.addHeader("cache-control", "no-cache,must-revalidate");
response.addHeader("expires", "0");

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