Call javascript function at regular intervals

Question

I created a stock ticker function and should call it every 2 minutes.

I managed to do this with the javascript setInterval function, but the problem is the first call, which it waits 2 minutes before the function call, while I need to call the first request right away.

 function CallFunction() { setInterval("GetFeed()", 2000); } 

Answer 1

  function CallFunction () {
         GetFeed ();
         setInterval ("GetFeed ()", 2000);
     }

Answer 2

 function CallFunction() { GetFeed(); return setInterval(GetFeed, 2 * 60 * 1000); } var id = CallFunction(); 

Answer 3

The following snippet shown in the image calls the function every 20 seconds, and it can be stopped by calling the cancelRepeat () function. Hope this helps.