jq中添加cookie与获取cookie的通用方式

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();

}

function getCookie(name){

var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");

if (arr = document.cookie.match(reg)) return unescape(arr[2]);

else return null;

}

function getQueryString(name) {
var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
var r = window.location.search.substr(1).match(reg);
if (r != null) return decodeURI(r[2]); return null;
}