Ajax技术的核心为Javascript，而javascript使用的是UTF-8编码，因此在页面采用GBK或者其他编码，同时没有进行编码转换时，就会出现中文乱码的问题。以下是分别使用GET和POST方式传值，并且页面采用GBK和UTF-8编码在IE和FF下的不同测试结果和出现乱码时的解决方案表, 见下面.

关于encodeURI, encodeURIComponent, escape的区别.

escape()

Don’t use it, as it has been deprecated since ECMAScript v3. 不要使用了.

encodeURI()

Use encodeURI when you want a working URL. Make this call:

使用encodeURI 那么你的期望结果是:

encodeURI("http://www.google.com/a file with spaces.html")

to get: 运行后,得到的结果是

http://www.google.com/a%20file%20with%20spaces.html

Don’t call encodeURIComponent since it would destroy the URL and return

不要调用encodeURIComponent, 因为它会破坏你的url. 看下面的时encodeURIComponent地返回.

http%3A%2F%2Fwww.google.com%2Fa%20file%20with%20spaces.html

encodeURIComponent()

Use encodeURIComponent when you want to encode a URL parameter.

只是在去encode url的参数时, 针对url 切勿使用!!!

param1 = encodeURIComponent("http://xyz.com/?a=12&b=55")

Then you may create the URL you need:

url = "http://domain.com/?param1=" + param1 + "&param2=99";

And you will get this complete URL:

http://www.domain.com/?param1=http%3A%2F%2Fxyz.com%2F%Ffa%3D12%26b%3D55&param2=99

Note that encodeURIComponent does not escape the ‘ character. A common bug is to use it to create html attributes such as href='MyUrl', which could suffer an injection bug. If you are constructing html from strings, either use ” instead of ‘ for attribute quotes, or add an extra layer of encoding (‘ can be encoded as %27).

参考文档

http://blog.csdn.net/fanteathy/article/details/7362105

http://www.jb51.net/article/24097.htm

http://stackoverflow.com/questions/75980/best-practice-escape-or-encodeuri-encodeuricomponent

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