javascript - I would like to call setinterval, and when set interval completes, change the page -

i use set interval, , when interval completes, change page - however, below, changes page after 1 interval run when want to change page when mynumber >= 300.

i'd grateful of help, thanks

    var mynumber = 0;  function openportal() {      var myinterval = window.setinterval(myzoom,2);         document.location.href ="http://next page";  }  function myzoom () {        if(mynumber>=300){           clearinterval(myinterval);       }       mynumber++;  } 

the problem calling document.location.href ="http://next page"; in openportal method, set interval , redirect page new location.

var mynumber = 0, myinterval;  function openportal() {     myinterval = window.setinterval(myzoom,2);     }  function myzoom () {     if(mynumber>=300){         clearinterval(myinterval)         document.location.href ="http://next page";     }     mynumber++;  }