方法如下
1.设置cookie 参数: cname:cookie 名称,cvalue:cookie 值 ,exdays:cookie 的过期时间
function setCookie(cname,cvalue,exdays)
{
var d = new Date();
d.setTime(d.getTime()+(exdays*24*60*60*1000));
var expires = "expires="+d.toGMTString();
document.cookie = cname + "=" + cvalue + "; " + expires;
}
2.获取cookie
function getCookie(cname)
{
var name = cname + "=";
var ca = document.cookie.split(';');
for(var i=0; i<ca.length; i++)
{
var c = ca[i].trim();
if (c.indexOf(name)==0) return c.substring(name.length,c.length);
}
return "";
}
3.删除cookie
function delCookie(cname)
{
var exp = new Date();
exp.setTime(exp.getTime()-1);
var cval = getCookie(cname);
if(cval != null){
document.cookie = cname + "=" + cval + ";expires=" + exp.toGMTString();
}
}
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