js cookie 存储封装

<script>

window.onload =function(){

//s 代表秒  h代表小时  d代表天
var demo = '{"product":[' + '{"proId":' + 123 + ',"proPrice":' + 100 + ',"proNum":' + 10 + '}' + '],"totalPrice":' + 100 + '}';

var demo1 = '{"product":[{"proId":123,"proPrice":100,"proNum":10}],"totalPrice":100}';

console.log(demo+"xx");

setCookie("name",demo,"s100");
var value = getCookie("name");
console.log('获取cookie的值为'+value);
var cooieJson = JSON.parse(value);
console.log(cooieJson.product[0].proId+"]]"+cooieJson.product[0].proPrice);
}

//判断是否为最后一个来决定是否要加最后的逗号  ② 讲id 的值前边拼接上 "{"  最后字段的值后边拼接上 } "
'{"product":[{"proId":"123","proPrice":"100"},{},{}]}'
'{"product":[' + "{proId:" + 123 + ",proPrice:" + 100 + ",proNum" + 10 + "}" + '],totalPrice:' + 100 + '}';

//cookie 封装 获取 cookie
function getCookie(name) {
var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
if(arr=document.cookie.match(reg))
return unescape(arr[2]);
else
return null;
}

//删除cookie
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();
}

//设置cookie 以及过期时间

function setCookie(name,value,time)
{
var strsec = getsec(time);
console.log("过期时间为--->"+strsec);
var exp = new Date();
exp.setTime(exp.getTime() + strsec*1);
document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}

//获取设置过期时间
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;
}
}

</script>