Create Counter by incrementing a separate Digit every 60 seconds

Question

As I don’t have much knowledge of javascript I would like a little help on how to do this script down.

This script would be a counter where every 60 seconds points add up and that counter starts from date and time x date and time end

Answer 1

Check if this is what you want:

var cont = 0;
var pontos = 0;

function contador() {
  document.getElementById('tempo').innerHTML = cont;
  if(cont == 60){
    cont = 0;
    pontos++;
    document.getElementById('pontos').innerHTML = pontos;
  }
  cont++;
  setTimeout("contador()", 1000);
}

window.onload = function () {
  //Insere as datas de inicio e fim do contador.
  var datainicio = '03/04/2019 00:00:00';
  var datafim = '05/04/2019 00:00:00';

  var hoje = new Date();
  var dd = String(hoje.getDate()).padStart(2, '0');
  var mm = String(hoje.getMonth() + 1).padStart(2, '0');
  var yyyy = hoje.getFullYear();
  var hh = String(hoje.getHours()).padStart(2, '0');
  var MM = String(hoje.getMinutes()).padStart(2, '0');
  var ss = String(hoje.getSeconds()).padStart(2, '0');

  hoje = mm + '/' + dd + '/' + yyyy + ' ' + hh + ':' + MM + ':' + ss;

  if(hoje >= datainicio && hoje <= datafim){
    contador();
  }
}

<b>Tempo: </b><span id="tempo">0</span></br>
<b>Pontos: </b><span id="pontos">0</span>