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Homephp教程php手册JavaScript中cookie的路径(path)和域(domain)

cookie虽然是由一个网页所创建,但并不只是创建cookie的网页才能读 取该cookie。在默认情况下,与创建cookie的网页在同一目录或子目录下的所有网页都可以读取该cookie。但如果在这个目录下还有子目录,要 使在子目录中也可以访问,则需要使用path参数设置coo

    cookie虽然是由一个网页所创建,但并不只是创建cookie的网页才能读 取该cookie。在默认情况下,与创建cookie的网页在同一目录或子目录下的所有网页都可以读取该cookie。但如果在这个目录下还有子目录,要 使在子目录中也可以访问,则需要使用path参数设置cookie,语法如下:
document.cookie="name=value; path=cookieDir";
   如果要使cookie在整个网站下可用,可以将cookieDir指定为根目录,示例如下:
document.cookie="userId=320; path=/";
   上面所说都指的是在同一个目录中的访问,可是要想在不同虚拟目录中访问则要另外想办法来解决这个问题。但是path不能解决在不同域中访问cookie的 问题。在默认情况下,只有和设置cookie的网页在同一个Web服务器的网页才能访问该网页创建的cookie。但可以通过domain参数来实现对其 的控制,其语法格式如下:
document.cookie="name=value; domain=cookieDomain";

具体代码如下,直接运行即可:

设置路径:



    设置cookie的路径



设置域:



    设置cookie的路径



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