How to add 5 minute javascript countdown timer which submit a form

Question

I want to add 5 minute countdown timer which submit a form to my php page.

Answer 1

Hope this helps

var trig = setInterval(timer,1000);

    var counter=0;
    var min=4;
    var sec=60;

    function timer(){

    sec=--sec;

    if(sec===0){
    min=--min;
    sec=59;
    counter=++counter;
    }

    if(counter===5){
    sec=0;
    min=0;
    clearInterval(trig);
     functionSubmit();
     document.write("Submitted");
     }

     document.getElementById("output").innerHTML = min+" : "+sec;

     }

Autosubmit in