javascript - HTML5 video player seek bar not working -

i have embedded html5 video player in application. when open web page first time, video player seek bar doesn't work. if refresh page , seek video works fine.

    function seektotime(value) {     var vidplayer = $("#myvideo")[0];     var seektotime = value;     if (seektotime < 0 || seektotime > vidplayer.duration)         return;       vidplayer.currenttime = seektotime;     $("#myvideo")[0].play();  }