Ajax Tips - Avoid the cache effect in IE-优快云博客

本文介绍了一种在使用GET请求时防止Internet Explorer浏览器缓存数据的方法。通过在URL中添加一个不断变化的参数如当前时间戳或随机数，可以确保每次请求都能获取到最新的数据。此外，还提供了一个使用jQuery实现的示例。

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If you use a GET method to send an asynchronous request to server side code,

if you don't do anything Internet Explorer will cache locally your request, so obviously you won't have the latest result in your response.

So instead of scripting something like this in Javascript (unless you use a POST method):

var url = "getCustomer.do?cm=S001"

use this:

var url = "getCustomer.do?cm=S001" + " & nocache="+ new Date().getTime();

This will force IE to show a fresh version of your request all the time because this request will put in a constantly changing variable in the URL such as date with seconds in Internet Explorer.

var url = "getCustomer.do?cm=S001" + " & random="+math.random()

Firefox doesn't seem to have this problem apparently.

we adopt jquery tech to get JSON response from server side, but only GET method is provided by this method $.getJSON(),

so we have to do more things to resolve IE cache issue as follows.

$.getJSON("../ajax/enquirecommcode.do"
, {"cmCode"
 : cmCode,"cpcmCode"
:cpcmCode,"nocache"
:Date()}



$.getJSON("../ajax/enquireoutrightleg.do"
,{"commCode"
 : commCode,"nocache"
:Date()}