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  • 缓存的技巧

     Put that in the HEAD section of the HTML page 
    <META HTTP-EQUIV="Pragma" CONTENT="no-cache">
    However, MS IE (almost all versions) do not process the instruction properly due to the cache mechanism.

    The workaround is to included a second <HEAD> section at the bottom of the page (no joke!). 

    <HTML><HEAD>
<META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE">
<META HTTP-EQUIV="REFRESH" CONTENT="5">
<TITLE> Demonstration Pragma No-cache </TITLE>
</HEAD><BODY>
This page has 2 HEAD sections to properly bypass the cache in all browser.
</BODY>
<HEAD><META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE"></HEAD>
</HTML>
    NOTE: the above example uses META HTTP-EQUIV="REFRESH" to make the browser reload the page automatically after 5 seconds, this is for demonstration purpose only (to see that the cache is actually bypassed). This has nothing with the bypassing of the cache itself.
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  • 原文地址：https://www.cnblogs.com/xiaotaoliang/p/797028.html
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