jquery - Capture user Idling using javascript -

our site has ifame links different content sites used online exams exams in content pages running 3+ hours exam guard there prevent users doing other stuff while doing exams

the problem once user completed exams on 3+hrs , come parent site (our site) has session time out issue in parent page, (parent site session time out set 180min )

as solution have implemented following jquery

    var to;     $(document).ready(function () {         = settimeout("timeout()", 10000);     });      function timeout() {         $.ajax({ type: "post",             url: "keepalivedummy.aspx", success: function () {                 = settimeout("timeout()", 10000);             }         });      }; 

now problem if 1 user open parent site , go away keep session unwantedly,

any suggestion capture idle time?

we can use "mousemove" event , see whether user active or not.

i have used below code test whether user idle time reached maximum idle time.

  function checkidletimeout() {         useridletime++;         if( useridletime >= maxidletime ) {             alert("reached max user idle time");             clearinterval(intvl);         }         $("#output").html( "useridletime: " + useridletime ); } 

i have provided sample demo, max idle time set 5 seconds.

demo @ jsfiddle demo