Javascript操作COOKIE

/**

 *添加cookie

 *objName cookie名称

 *objValue cookie值

 *objHours 保存时间（单位为小时）

 */

 function addCookie(objName,objValue,objHours){

 var str = objName + "=" + escape(objValue);

 if(objHours > 0){

 var date = new Date();

 var ms = objHours*3600*1000;

 date.setTime(date.getTime() + ms);

 str += "; expires=" + date.toGMTString();

 }

 document.cookie = str;

 }

 /**

 *读取cookie

 *objName cookie名称

 */

 function getCookie(objName){

 var arrStr = document.cookie.split("; ");

 for(var i = 0;i < arrStr.length;i ++){

 var temp = arrStr[i].split("=");

 if(temp[0] == objName)

 return unescape(temp[1]);

 }

 }

 /**

 *删除cookie

 *name cookie名称

 */

 function delCookie(name){

 var date = new Date();

 date.setTime(date.getTime() - 10000);

 document.cookie = name + "=a; expires=" + date.toGMTString();

 }