js操作cookie
2016-12-12 dingshangchao JavaScript
1.写
function setCookie(name,value,days)
{
var exp = new Date();
exp.setTime(exp.getTime() + days*24*60*60*1000);
document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
2.读
function getCookie(name)
{
var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
if(arr=document.cookie.match(reg))
return unescape(arr[2]);
return null;
}
3.删
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();
}
或
setCookie(name,null,-1);
标签: cookie