JS write online exam countdown, cookie prevents refresh

$ (function ()  {var _minute = parseint ("${EXAMPAPER.PAPERTIME&NBSP;}"); var _ Expireshours = _minute * 60 * 1000;  if (!hasSetCookie ()) {AddCookie ("${ Examinee.examineeid} ",  _expireshours, _expireshours);}  settime ($ ("#remainTime"));  }); Function hassetcookie () {var strcookie =  Document.cookie;var arrcookie = strcookie.split ("; ");for  (var i = 0;  i < arrcookie.length; i++)  {var arr = arrcookie[i].split ("=");   (arr[0] ==  "${examinee.examineeid}")  {return true;}}; Return false;} Start Countdown Function settime (Remaintime)  {var _time = getcookievalue (" 871d31bacfd4451484c5f70f8860c2a9 "); Var _countdown = parseint (Getcookievalue (" ${ Examinee.examineeid}))  / 1000;if  (_countdown <= 0)  {alert ("Exam time to!") "); Endexam ();}  else&nbsP {Var _second = _countdown % 60;var _minute = parseint (_countdown  / 60)  % 60;var _hour = parseint (parseint (_countdown / 60)  /  ;if  (_hour < 10) _hour =  "0"  + _hour.tostring ();if  (_second  &LT;&NBSP;10) _second =  "0"  + _second.tostring ();if  (_minute < 10) _minute  =  "0"  + _minute.tostring () remaintime.html (_hour +  ":"  + _minute  +  ":"  + _second); _countdown--;editcookie ("${examinee.examineeid}",  _countdown *  1000, _countdown * 1000);} Executes settimeout (function ()  {settime (remaintime) every 1000 milliseconds;}, 1000);};/ /Time Add Cookiefunction addcookie (name, value, expireshours)  {var cookiestring =  name +  "="  + escape (value); the  //escape ()   function encodes the string so that it can be read on all computers. Judge whetherSet expiration time, 0 means disable if  (expireshours > 0)  {var date = new date () when the browser is closed; Date.settime (Date.gettime ()  + expireshours * 1000); cookiestring = cookiestring  +  "; expires="  + date.toutcstring ();} document.cookie = cookiestring;} Modify the value of the cookie Function editcookie (name, value, expireshours)  {var cookiestring =  name +  "="  + escape (value);if  (expireshours > 0)  {var  Date = new date ();d ate.settime (Date.gettime ()  + expireshours * 1000);  The unit is millisecond cookiestring = cookiestring +  "; expires="  + date.togmtstring ();} document.cookie = cookiestring;} Gets the value of the cookie by name Function getcookievalue (name)  {var strcookie = document.cookie;var  arrcookie = strcookie.split ("; ");for  (var i = 0; i <& NBsp;arrcookie.length; i++)  {var arr = arrcookie[i].split ("=");if  (arr[0] ==  name)  {return unescape (arr[1]);  else {continue;};};}

JS write online exam countdown, cookie prevents refresh