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效果图: ----------------------------------------------------------------  -------------------------------------------------------------- /** * Read the JavaScript cookies tutorial at: * http://www./articles/javascript/cookies.xml */ /** * Sets a Cookie with the given name and value. * 创建cookie * name Name of the cookie cookie的name * value Value of the cookiecookie的值 * [expires] 过期时间,没有则关闭浏览器过期,如果想让一个cookie删除,则设置过期时间为过去的某一个时间即可 * [path] path="/www",设置了cookie能够被服务器里的www目录及子目录访问,这样通过path设置cookie共享的范围.如果设置cookie能够被服务器上所有的网页访问到,达到全局共享的目的,则可以改变path为path="/" * [domain] 跨服务器共享.有多个网站分布在不同的服务器上,但他们属于同一个用户.例如,www.baihui.com.其办公网站office.baihui.com,其登陆网站ipassport.baihui.com.他们是统一用户,因此需要实现cookie共享.可以设置domain=".baihui.com" * [secure] 是信息传输更加安全.secure=true,设置cookie只能在安全的Internet上连接. */ function setCookie(name, value, expires, path, domain, secure) { document.cookie= name + "=" + escape(value) + ((expires) ? "; expires=" + expires.toGMTString() : "") + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : ""); } /** * Gets the value of the specified cookie. * 读取cookie * name Name of the desired cookie. * * Returns a string containing value of specified cookie, * or null if cookie does not exist. */ function getCookie(name) { var dc = document.cookie; var prefix = name + "="; var begin = dc.indexOf("; " + prefix); if (begin == -1) { begin = dc.indexOf(prefix); if (begin != 0) return null; } else { begin += 2; } var end = document.cookie.indexOf(";", begin); if (end == -1) { end = dc.length; } return unescape(dc.substring(begin + prefix.length, end)); } /** * Deletes the specified cookie. * 删除cookie * name name of the cookie * [path] path of the cookie (must be same as path used to create cookie) * [domain] domain of the cookie (must be same as domain used to create cookie) */ function deleteCookie(name, path, domain) { if (getCookie(name)) { document.cookie = name + "=" + ((path) ? "; path=" + path : "") + ((domain) ? "; domain=" + domain : "") + "; expires=Thu, 01-Jan-70 00:00:01 GMT"; } } ------------------------------------------------------------------------------------ 调用cookie.js的html文件:cookies.html ------------------------------------------------------- <html> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <head> <title>cookies</title> <script src="cookie.js"></script> <script language="JavaScript"> <!-- var exp = new Date("December 31, 9998"); setCookie("COOKIE_MYNAME","Tom",exp,"/"); var myname = getCookie("COOKIE_MYNAME"); document.write("设置的名为COOKIE_MYNAME的cookies值为："+myname + "<br>"); deleteCookie("COOKIE_MYNAME","/"); var newname = getCookie("COOKIE_MYNAME"); document.write("设置的名为COOKIE_MYNAME的cookies值为："+newname); //--> </script> </head> <body> </body> </html> --------------------------------------------------------
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来自： I_T_馆 > 《javascript》
