简单封装cookie操作

 1  1 //设置cookie
 2  2 function setCookie(name, value, day) {
 3  3 var oDate = new Date();
 4  4 oDate.setDate(oDate.getDate() + day);
 5  5 document.cookie = name + '=' + value + ';expires=' + oDate;
 6  6 }
 7  7 //删除cookie
 8  8 function delCookie(name) {
 9  9 setCookie(name, 1, -1);
10 10 }
11 11 
12 12 //获取cookie
13 13 function getCookie(name) {
14 14 var arr = document.cookie.split('; ');
15 15 for(var i = 0; i < arr.length; i++) {
16 16 var arrName = arr[i].split('=');
17 17 if(arrName[0] == name) {
18 18 return arrName[1];
19 19 }
20 20 }
21 21 return '';
22 22 }