1 //获取指定名称的cookie的值 2 function getCookie(objName) { 3     var arrStr = document.cookie.split("; "); 4     for (var i = 0; i < arrStr.length; i++) { 5         var temp = arrStr[i].split("="); 6         if (temp[0] == objName) return unescape(temp[1]); 7     } 8 } 9 //添加cookie10 function addCookie(objName, objValue, objHours) {      11     var str = objName + "=" + escape(objValue);12     if (objHours > 0) {                               //为时不设定过期时间，浏览器关闭时cookie自动消失13         var date = new Date();14         var ms = objHours * 3600 * 1000;15         date.setTime(date.getTime() + ms);16         str += "; expires=" + date.toGMTString();17     }18     document.cookie = str;19 }20 //删除cookie21 function delCookie(name)22 {23     document.cookie = name + "=;expires=" + (new Date(0)).toGMTString();24 }