概述
- //JS操作cookies方法!
- //写cookies
- function setCookie(name,value)
- {
- var Days = 30;
- var exp = new Date();
- exp.setTime(exp.getTime() + Days*24*60*60*1000);
- document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
- }
- //读取cookies
- function getCookie(name)
- {
- var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
- if(arr=document.cookie.match(reg)) return unescape(arr[2]);
- else return null;
- }
- //删除cookies
- function delCookie(name)
- {
- var exp = new Date();
- exp.setTime(exp.getTime() - 1);
- var cval=getCookie(name);
- if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
- }
- //使用示例
- setCookie("name","hayden");
- alert(getCookie("name"));
- //如果需要设定自定义过期时间
- //那么把上面的setCookie 函数换成下面两个函数就ok;
- //程序代码
- function setCookie2(name,value,time){
- var strsec = getsec(time);
- var exp = new Date();
- exp.setTime(exp.getTime() + strsec*1);
- document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
- }
- function getsec(str){
- alert(str);
- var str1=str.substring(1,str.length)*1;
- var str2=str.substring(0,1);
- if (str2=="s"){
- return str1*1000;
- }else if (str2=="h"){
- return str1*60*60*1000;
- }else if (str2=="d"){
- return str1*24*60*60*1000;
- }
- }
- //这是有设定过期时间的使用示例:
- //s20是代表20秒
- //h是指小时,如12小时则是:h12
- //d是天数,30天则:d30
- //暂时只写了这三种
- setCookie2("name2","hayden2","s20");
- alert(getCookie("name2"));
- 以下是几个比较常见的好用的函数:
- function GetCookieVal(offset)
- //获得Cookie解码后的值
- {
- var endstr = document.cookie.indexOf (";", offset);
- if (endstr == -1)
- endstr = document.cookie.length;
- return unescape(document.cookie.substring(offset, endstr));
- }
- function SetCookie(name, value)
- //设定Cookie值
- {
- var expdate = new Date();
- var argv = SetCookie.arguments;
- var argc = SetCookie.arguments.length;
- var expires = (argc > 2) ? argv[2] : null;
- var path = (argc > 3) ? argv[3] : null;
- var domain = (argc > 4) ? argv[4] : null;
- var secure = (argc > 5) ? argv[5] : false;
- if(expires!=null) expdate.setTime(expdate.getTime() + ( expires * 1000 ));
- document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString()))
- +((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain))
- +((secure == true) ? "; secure" : "");
- }
- function DelCookie(name)
- //删除Cookie
- {
- var exp = new Date();
- exp.setTime (exp.getTime() - 1);
- var cval = GetCookie (name);
- document.cookie = name + "=" + cval + "; expires="+ exp.toGMTString();
- }
- function GetCookie(name)
- //获得Cookie的原始值
- {
- var arg = name + "=";
- var alen = arg.length;
- var clen = document.cookie.length;
- var i = 0;
- while (i < clen)
- {
- var j = i + alen;
- if (document.cookie.substring(i, j) == arg)
- return GetCookieVal (j);
- i = document.cookie.indexOf(" ", i) + 1;
- if (i == 0) break;
- }
- return null;
- }
- //测试
- SetCookie("sunshine","1986");
- alert(GetCookie("sunshine"));
最后
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