cookie的基本使用

取cookie
var getCookie = function() {
var strCookie = document.cookie;
//将多cookie切割为多个名/值对
var arrCookie = strCookie.split(";");
var nowPage=null;
//遍历cookie数组，处理每个cookie对
for (var i = 0; i < arrCookie.length; i++) {
var arr = unescape(arrCookie[i]).split("=");
alert(arr[0]);
//找到名称为userId的cookie，并返回它的值
if ("nowPage"==arr[0]) {
alert(arr[1]);
nowPage = arr[1];
break;
}
}
return nowPage;
};

存cookie
document.cookie="nowPage="+escape("ggg");
escape 编码 unecape 解码